Finding the Fourth Proportional to 2,391.24, 3,585.46 and 928.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,391.24 : 3,585.46 = 928.69 : x
2. Step 2: Convert to fraction form
   2,391.24/3,585.46 = 928.69/x
3. Step 3: Cross multiply
   2,391.24x = 3,585.46 × 928.69
4. Step 4: Simplify right side
   2,391.24x = 3,329,780.85
5. Step 5: Solve for x
   x = 3,329,780.85/2,391.24
6. Step 6: Final answer
   x = 1,392.49