Finding the Fourth Proportional to 2,017.38, 3,025.99 and 831.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.38 : 3,025.99 = 831.39 : x
2. Step 2: Convert to fraction form
   2,017.38/3,025.99 = 831.39/x
3. Step 3: Cross multiply
   2,017.38x = 3,025.99 × 831.39
4. Step 4: Simplify right side
   2,017.38x = 2,515,777.83
5. Step 5: Solve for x
   x = 2,515,777.83/2,017.38
6. Step 6: Final answer
   x = 1,247.05