Finding the Fourth Proportional to 2,647.85, 3,671.50 and 2,560.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,647.85 : 3,671.50 = 2,560.04 : x
2. Step 2: Convert to fraction form
   2,647.85/3,671.50 = 2,560.04/x
3. Step 3: Cross multiply
   2,647.85x = 3,671.50 × 2,560.04
4. Step 4: Simplify right side
   2,647.85x = 9,399,186.86
5. Step 5: Solve for x
   x = 9,399,186.86/2,647.85
6. Step 6: Final answer
   x = 3,549.74