Finding the Fourth Proportional to 2,632.17, 3,947.40 and 876.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,632.17 : 3,947.40 = 876.80 : x
2. Step 2: Convert to fraction form
   2,632.17/3,947.40 = 876.80/x
3. Step 3: Cross multiply
   2,632.17x = 3,947.40 × 876.80
4. Step 4: Simplify right side
   2,632.17x = 3,461,080.32
5. Step 5: Solve for x
   x = 3,461,080.32/2,632.17
6. Step 6: Final answer
   x = 1,314.92