Compute the positive integer $x$ such that
\[4x^3 - 41x^2 + 10x = 1989.\]
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Compute the positive integer $x$ such that
\[4x^3 - 41x^2 + 10x = 1989.\]
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
13
Compute the positive integer $x$ such that
\[4x^3 - 41x^2 + 10x = 1989.\]
train