Finding the Fourth Proportional to 3,987.52, 5,978.40 and 2,038.24

Step by Step Solution

1. Step 1: Write the proportion equation
   3,987.52 : 5,978.40 = 2,038.24 : x
2. Step 2: Convert to fraction form
   3,987.52/5,978.40 = 2,038.24/x
3. Step 3: Cross multiply
   3,987.52x = 5,978.40 × 2,038.24
4. Step 4: Simplify right side
   3,987.52x = 12,185,414.02
5. Step 5: Solve for x
   x = 12,185,414.02/3,987.52
6. Step 6: Final answer
   x = 3,055.89