Finding the Fourth Proportional to 2,562.86, 3,844.38 and 831.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,562.86 : 3,844.38 = 831.50 : x
2. Step 2: Convert to fraction form
   2,562.86/3,844.38 = 831.50/x
3. Step 3: Cross multiply
   2,562.86x = 3,844.38 × 831.50
4. Step 4: Simplify right side
   2,562.86x = 3,196,601.97
5. Step 5: Solve for x
   x = 3,196,601.97/2,562.86
6. Step 6: Final answer
   x = 1,247.28