Finding the Fourth Proportional to 3,520.82, 5,280.86 and 923.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,520.82 : 5,280.86 = 923.42 : x
2. Step 2: Convert to fraction form
   3,520.82/5,280.86 = 923.42/x
3. Step 3: Cross multiply
   3,520.82x = 5,280.86 × 923.42
4. Step 4: Simplify right side
   3,520.82x = 4,876,451.74
5. Step 5: Solve for x
   x = 4,876,451.74/3,520.82
6. Step 6: Final answer
   x = 1,385.03