Finding the Fourth Proportional to 2,607.92, 3,912.42 and 876.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.92 : 3,912.42 = 876.50 : x
2. Step 2: Convert to fraction form
   2,607.92/3,912.42 = 876.50/x
3. Step 3: Cross multiply
   2,607.92x = 3,912.42 × 876.50
4. Step 4: Simplify right side
   2,607.92x = 3,429,236.13
5. Step 5: Solve for x
   x = 3,429,236.13/2,607.92
6. Step 6: Final answer
   x = 1,314.93