Finding the Fourth Proportional to 2,599.76, 3,891.61 and 2,080.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,599.76 : 3,891.61 = 2,080.89 : x
2. Step 2: Convert to fraction form
   2,599.76/3,891.61 = 2,080.89/x
3. Step 3: Cross multiply
   2,599.76x = 3,891.61 × 2,080.89
4. Step 4: Simplify right side
   2,599.76x = 8,098,014.93
5. Step 5: Solve for x
   x = 8,098,014.93/2,599.76
6. Step 6: Final answer
   x = 3,114.91