Finding the Fourth Proportional to 1,494.15, 2,061.98 and 831.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,494.15 : 2,061.98 = 831.07 : x
2. Step 2: Convert to fraction form
   1,494.15/2,061.98 = 831.07/x
3. Step 3: Cross multiply
   1,494.15x = 2,061.98 × 831.07
4. Step 4: Simplify right side
   1,494.15x = 1,713,649.72
5. Step 5: Solve for x
   x = 1,713,649.72/1,494.15
6. Step 6: Final answer
   x = 1,146.91