Finding the Fourth Proportional to 2,880.72, 4,308.66 and 2,521.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,880.72 : 4,308.66 = 2,521.08 : x
2. Step 2: Convert to fraction form
   2,880.72/4,308.66 = 2,521.08/x
3. Step 3: Cross multiply
   2,880.72x = 4,308.66 × 2,521.08
4. Step 4: Simplify right side
   2,880.72x = 10,862,476.55
5. Step 5: Solve for x
   x = 10,862,476.55/2,880.72
6. Step 6: Final answer
   x = 3,770.75