Finding the Fourth Proportional to 2,632.28, 3,948.59 and 877.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,632.28 : 3,948.59 = 877.22 : x
2. Step 2: Convert to fraction form
   2,632.28/3,948.59 = 877.22/x
3. Step 3: Cross multiply
   2,632.28x = 3,948.59 × 877.22
4. Step 4: Simplify right side
   2,632.28x = 3,463,764.57
5. Step 5: Solve for x
   x = 3,463,764.57/2,632.28
6. Step 6: Final answer
   x = 1,315.88