Finding the Fourth Proportional to 3,680.98, 5,079.18 and 2,087.74

Step by Step Solution

1. Step 1: Write the proportion equation
   3,680.98 : 5,079.18 = 2,087.74 : x
2. Step 2: Convert to fraction form
   3,680.98/5,079.18 = 2,087.74/x
3. Step 3: Cross multiply
   3,680.98x = 5,079.18 × 2,087.74
4. Step 4: Simplify right side
   3,680.98x = 10,604,007.25
5. Step 5: Solve for x
   x = 10,604,007.25/3,680.98
6. Step 6: Final answer
   x = 2,880.76