Finding the Fourth Proportional to 2,155.24, 3,233.18 and 616.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155.24 : 3,233.18 = 616.20 : x
2. Step 2: Convert to fraction form
   2,155.24/3,233.18 = 616.20/x
3. Step 3: Cross multiply
   2,155.24x = 3,233.18 × 616.20
4. Step 4: Simplify right side
   2,155.24x = 1,992,285.52
5. Step 5: Solve for x
   x = 1,992,285.52/2,155.24
6. Step 6: Final answer
   x = 924.39