Finding Measure of Angles in Intersecting Lines

In the figure below, two intersecting lines create four angles at the point of intersection. If angle 1 measures x degrees, angle 2 measures (3x - 10) degrees, and angle 3 is vertically opposite angle 1, what is the measure of angle 4?

Recall that vertical angles are equal and that the sum of angles on a straight line is 180 degrees.