Finding the Fourth Proportional to 2,632.68, 3,948.17 and 877.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,632.68 : 3,948.17 = 877.22 : x
2. Step 2: Convert to fraction form
   2,632.68/3,948.17 = 877.22/x
3. Step 3: Cross multiply
   2,632.68x = 3,948.17 × 877.22
4. Step 4: Simplify right side
   2,632.68x = 3,463,413.69
5. Step 5: Solve for x
   x = 3,463,413.69/2,632.68
6. Step 6: Final answer
   x = 1,315.55