Finding the Fourth Proportional to 3,868.88, 5,339.25 and 2,275.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,868.88 : 5,339.25 = 2,275.61 : x
2. Step 2: Convert to fraction form
   3,868.88/5,339.25 = 2,275.61/x
3. Step 3: Cross multiply
   3,868.88x = 5,339.25 × 2,275.61
4. Step 4: Simplify right side
   3,868.88x = 12,150,024.00
5. Step 5: Solve for x
   x = 12,150,024.00/3,868.88
6. Step 6: Final answer
   x = 3,140.45