Finding the Fourth Proportional to 2,002.25, 3,003.30 and 831.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,002.25 : 3,003.30 = 831.94 : x
2. Step 2: Convert to fraction form
   2,002.25/3,003.30 = 831.94/x
3. Step 3: Cross multiply
   2,002.25x = 3,003.30 × 831.94
4. Step 4: Simplify right side
   2,002.25x = 2,498,557.89
5. Step 5: Solve for x
   x = 2,498,557.89/2,002.25
6. Step 6: Final answer
   x = 1,247.87