Finding the Fourth Proportional to 2,601.27, 3,902.31 and 752.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,601.27 : 3,902.31 = 752.40 : x
2. Step 2: Convert to fraction form
   2,601.27/3,902.31 = 752.40/x
3. Step 3: Cross multiply
   2,601.27x = 3,902.31 × 752.40
4. Step 4: Simplify right side
   2,601.27x = 2,936,098.04
5. Step 5: Solve for x
   x = 2,936,098.04/2,601.27
6. Step 6: Final answer
   x = 1,128.72