Finding the Fourth Proportional to 2,632.72, 3,948.06 and 877.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,632.72 : 3,948.06 = 877.38 : x
2. Step 2: Convert to fraction form
   2,632.72/3,948.06 = 877.38/x
3. Step 3: Cross multiply
   2,632.72x = 3,948.06 × 877.38
4. Step 4: Simplify right side
   2,632.72x = 3,463,954.64
5. Step 5: Solve for x
   x = 3,463,954.64/2,632.72
6. Step 6: Final answer
   x = 1,315.73