Finding the Fourth Proportional to 3,744.88, 5,168.72 and 2,486

Step by Step Solution

1. Step 1: Write the proportion equation
   3,744.88 : 5,168.72 = 2,486 : x
2. Step 2: Convert to fraction form
   3,744.88/5,168.72 = 2,486/x
3. Step 3: Cross multiply
   3,744.88x = 5,168.72 × 2,486
4. Step 4: Simplify right side
   3,744.88x = 12,849,437.92
5. Step 5: Solve for x
   x = 12,849,437.92/3,744.88
6. Step 6: Final answer
   x = 3,431.20