Finding the Fourth Proportional to 3,659.72, 5,049.16 and 2,087.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,659.72 : 5,049.16 = 2,087.42 : x
2. Step 2: Convert to fraction form
   3,659.72/5,049.16 = 2,087.42/x
3. Step 3: Cross multiply
   3,659.72x = 5,049.16 × 2,087.42
4. Step 4: Simplify right side
   3,659.72x = 10,539,687.10
5. Step 5: Solve for x
   x = 10,539,687.10/3,659.72
6. Step 6: Final answer
   x = 2,879.92