$$-1000000x^3+1274000x^2-1457769x+3687948 = 0$$
Answer
$$ \begin{matrix}x_1 = 1.6963 & x_2 = -0.21115+1.45929i & x_3 = -0.21115-1.45929i \end{matrix} $$
Explanation
This polynomial has no rational roots that can be found using Rational Root Test.
Roots were found using qubic formulas.
This page was created using
Polynomial Equations Solver