Using polynomial to time-series in Power BI to make predictions

[Anonymous]

Suppose that I have the following table in Power BI:

Attendance date and time	Attendant name
12.5.2018 10.49.29	Peter
12.5.2018 11.05.08	Tina
14.5.2018 9.36.59	Adam
15.5.2018 8.44.05	Esther
16.6.2018 8.34.08	Elena
20.4.2019 9.05.59	Josh

I have drawn a line chart where I have time on the x axis and cumulative number of attendants on the y axis. I would like to fit there a polynomial (of degree 3, for example) and then continue the line to make predictions about the cumulative number of attendants in the future. I am not sure how to do that, I can only find tools to fit a line. 

[amitchandak]

@Anonymous , refer if this can help

https://community.powerbi.com/t5/Community-Blog/Building-a-Regression-Model-with-zero-code-in-PowerBI/ba-p/663582