Finding the Fourth Proportional to 2,607.98, 3,911.13 and 876.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.98 : 3,911.13 = 876.20 : x
2. Step 2: Convert to fraction form
   2,607.98/3,911.13 = 876.20/x
3. Step 3: Cross multiply
   2,607.98x = 3,911.13 × 876.20
4. Step 4: Simplify right side
   2,607.98x = 3,426,912.55
5. Step 5: Solve for x
   x = 3,426,912.55/2,607.98
6. Step 6: Final answer
   x = 1,314.01