Finding the Fourth Proportional to 2,265.32, 3,398.12 and 621.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,265.32 : 3,398.12 = 621.83 : x
2. Step 2: Convert to fraction form
   2,265.32/3,398.12 = 621.83/x
3. Step 3: Cross multiply
   2,265.32x = 3,398.12 × 621.83
4. Step 4: Simplify right side
   2,265.32x = 2,113,032.86
5. Step 5: Solve for x
   x = 2,113,032.86/2,265.32
6. Step 6: Final answer
   x = 932.78