Finding the Fourth Proportional to 3,681.12, 5,079.98 and 2,002.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,681.12 : 5,079.98 = 2,002.57 : x
2. Step 2: Convert to fraction form
   3,681.12/5,079.98 = 2,002.57/x
3. Step 3: Cross multiply
   3,681.12x = 5,079.98 × 2,002.57
4. Step 4: Simplify right side
   3,681.12x = 10,173,007.86
5. Step 5: Solve for x
   x = 10,173,007.86/3,681.12
6. Step 6: Final answer
   x = 2,763.56