Finding the Fourth Proportional to 3,608.62, 4,978.88 and 2,415.36

Step by Step Solution

1. Step 1: Write the proportion equation
   3,608.62 : 4,978.88 = 2,415.36 : x
2. Step 2: Convert to fraction form
   3,608.62/4,978.88 = 2,415.36/x
3. Step 3: Cross multiply
   3,608.62x = 4,978.88 × 2,415.36
4. Step 4: Simplify right side
   3,608.62x = 12,025,787.60
5. Step 5: Solve for x
   x = 12,025,787.60/3,608.62
6. Step 6: Final answer
   x = 3,332.52