Finding the Fourth Proportional to 2,632.53, 3,948.78 and 877.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,632.53 : 3,948.78 = 877.98 : x
2. Step 2: Convert to fraction form
   2,632.53/3,948.78 = 877.98/x
3. Step 3: Cross multiply
   2,632.53x = 3,948.78 × 877.98
4. Step 4: Simplify right side
   2,632.53x = 3,466,949.86
5. Step 5: Solve for x
   x = 3,466,949.86/2,632.53
6. Step 6: Final answer
   x = 1,316.96