How to solve a proportion using the cross product

The video tutorial explains how to solve a proportion by setting two ratios equal and applying cross multiplication. It emphasizes the importance of rewriting cross products and using the distributive property. The tutorial walks through solving the equation step-by-step, including subtraction and division, and concludes with the final fractional answer.

What steps do you take after finding that 7 * 3 equals 2 * (X + 1)?

What is the final fractional answer for X in the equation derived from the cross multiplication?