Finding the Fourth Proportional to 1,494.50, 2,062.31 and 831.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,494.50 : 2,062.31 = 831.30 : x
2. Step 2: Convert to fraction form
   1,494.50/2,062.31 = 831.30/x
3. Step 3: Cross multiply
   1,494.50x = 2,062.31 × 831.30
4. Step 4: Simplify right side
   1,494.50x = 1,714,394.15
5. Step 5: Solve for x
   x = 1,714,394.15/1,494.50
6. Step 6: Final answer
   x = 1,147.14