Stop wasting your time on PageRank... Instead, use MOZ's metrics and work on your DA and PA (which is not much different than PageRank)..

Obtain backlinks from high authority websites relevant to yours and try to get them from different IPs (10 backlinks from 10 different sites is MUCH better than 100 backinks from one site!)

The PR or Page Rank is no longer. If you want to read it in detail you can search on google and find out the relevant google article.

Using SEO, both on page and off page ones

On-site Optimization.
Keyword Density.
Interlinking.
Off-site Optimization.
External Back links.

Start building good backlinks for your website.Also if you have good quality content then only you can get high PR.

So the simple manner to get high PR for your website is the following:-

1> Have good quality content on your website.
2>Start doing SEO and start building high quality backlinks from high PR websites.

If you get good do-follow links from high PR rank websites it will increase your search engine ranking as well as Page rank of your website.

Page rank is not working anymore, their is no update on page rank from Google.