find base if exponent is known and result is known

2.785=X^0.315
2.785 ^(1/0.315)=(X^0.315) ^(1/0.315)
2.785^(1/0.315)=X

[input]2.785^(1/0.315)[/input]

test the result:
[input]25.831135080444533^0.315[/input]