wrong forum i think.

You did not say whether the casflows happen at the start or the end of each year. I will assume they happen at the start of each year.

Using standard notation

i = annual interest rate

you want to solve PV = 0

Use trial and error. For a first guess i will use 10%

@ 10%: PV = 2099

@ 20%: PV = -213

So the answer is between 10% and 20%. it looks closer to 20%

@18%: 328

@19%: 51.98

So the answer is between 19% and 20%

Keep going and you will get 19.2%