Finding the Fourth Proportional to 2,880.76, 3,965.10 and 2,550.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,880.76 : 3,965.10 = 2,550.52 : x
2. Step 2: Convert to fraction form
   2,880.76/3,965.10 = 2,550.52/x
3. Step 3: Cross multiply
   2,880.76x = 3,965.10 × 2,550.52
4. Step 4: Simplify right side
   2,880.76x = 10,113,066.85
5. Step 5: Solve for x
   x = 10,113,066.85/2,880.76
6. Step 6: Final answer
   x = 3,510.56