Finding the Fourth Proportional to 2,632.84, 3,948.76 and 877.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,632.84 : 3,948.76 = 877.58 : x
2. Step 2: Convert to fraction form
   2,632.84/3,948.76 = 877.58/x
3. Step 3: Cross multiply
   2,632.84x = 3,948.76 × 877.58
4. Step 4: Simplify right side
   2,632.84x = 3,465,352.80
5. Step 5: Solve for x
   x = 3,465,352.80/2,632.84
6. Step 6: Final answer
   x = 1,316.20