Finding the Fourth Proportional to 792.72, 1,187.42 and 502.72

Step by Step Solution

1. Step 1: Write the proportion equation
   792.72 : 1,187.42 = 502.72 : x
2. Step 2: Convert to fraction form
   792.72/1,187.42 = 502.72/x
3. Step 3: Cross multiply
   792.72x = 1,187.42 × 502.72
4. Step 4: Simplify right side
   792.72x = 596,939.78
5. Step 5: Solve for x
   x = 596,939.78/792.72
6. Step 6: Final answer
   x = 753.03