Given that the received amount was $350 from a car wash, $337 from a bake sale, and $490 from a used equipment sale.
Also, the interest rate is 2.2 % and the time period is 3 years.
Thus, the total amount is as follows:

Next, the accumulated amount can be calculated as follows:

Further, solve the obtained result as follows:

Thus, the league will have $1256.40 in their account after 3 years.