Finding the Fourth Proportional to 2,474.52, 3,712.05 and 831.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,474.52 : 3,712.05 = 831.18 : x
2. Step 2: Convert to fraction form
   2,474.52/3,712.05 = 831.18/x
3. Step 3: Cross multiply
   2,474.52x = 3,712.05 × 831.18
4. Step 4: Simplify right side
   2,474.52x = 3,085,381.72
5. Step 5: Solve for x
   x = 3,085,381.72/2,474.52
6. Step 6: Final answer
   x = 1,246.86