How is it possible to invest 1.000$ and have 400.000$ by the end of 2019 ? 
It is a very optimistic forecast as if PGX would increase like BTC increased in 2016 or 2017. But it could happen. What is more this coin is based on the companys activity. 400 times jump in price in two years is real even for a usual non-crypto companies, so the forecast is not too optimistic