Finding the Fourth Proportional to 2,000.83, 3,000.72 and 831.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,000.83 : 3,000.72 = 831.16 : x
2. Step 2: Convert to fraction form
   2,000.83/3,000.72 = 831.16/x
3. Step 3: Cross multiply
   2,000.83x = 3,000.72 × 831.16
4. Step 4: Simplify right side
   2,000.83x = 2,494,070.93
5. Step 5: Solve for x
   x = 2,494,070.93/2,000.83
6. Step 6: Final answer
   x = 1,246.52