Finding the Fourth Proportional to 2,388.64, 3,581.88 and 1,658.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,388.64 : 3,581.88 = 1,658.56 : x
2. Step 2: Convert to fraction form
   2,388.64/3,581.88 = 1,658.56/x
3. Step 3: Cross multiply
   2,388.64x = 3,581.88 × 1,658.56
4. Step 4: Simplify right side
   2,388.64x = 5,940,762.89
5. Step 5: Solve for x
   x = 5,940,762.89/2,388.64
6. Step 6: Final answer
   x = 2,487.09