1.15925926X10^-12=x^4
$$\\x^4=1.15925926\times 10^{-12}\\\\ (x^4)^{1/4}=(1.15925926\times 10^{-12})^{1/4}\\\\ x=1.15925926^{0.25}\times 10^{-12*0.25}\\\\ x=1.15925926^{0.25}\times 10^{-3}\\\\$$
You can finish it on the calc on the home page.
