Answer
$x=1.5893$
Work Step by Step
$$\dfrac{3.01}{\ln x}=\dfrac{28}{4.31}$$
Let's use multiplication and cross product properties.
$$3.01\cdot 4.31=28\cdot \ln x$$
or
$$\ln x=\dfrac{3.01\cdot4.31}{28}$$
Let's apply inverse function. and round to four decimal places:
$$x=e^{\frac{3.01\cdot4.31}{28}}=e^{0.463325}=1.5893$$
