Finding the Fourth Proportional to 3,978.15, 5,487.97 and 2,384.04

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.15 : 5,487.97 = 2,384.04 : x
2. Step 2: Convert to fraction form
   3,978.15/5,487.97 = 2,384.04/x
3. Step 3: Cross multiply
   3,978.15x = 5,487.97 × 2,384.04
4. Step 4: Simplify right side
   3,978.15x = 13,083,540.00
5. Step 5: Solve for x
   x = 13,083,540.00/3,978.15
6. Step 6: Final answer
   x = 3,288.85