Finding the Fourth Proportional to 1,494.86, 2,062.91 and 831.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,494.86 : 2,062.91 = 831.74 : x
2. Step 2: Convert to fraction form
   1,494.86/2,062.91 = 831.74/x
3. Step 3: Cross multiply
   1,494.86x = 2,062.91 × 831.74
4. Step 4: Simplify right side
   1,494.86x = 1,715,796.53
5. Step 5: Solve for x
   x = 1,715,796.53/1,494.86
6. Step 6: Final answer
   x = 1,147.80