Finding the Fourth Proportional to 2,632.56, 3,948.72 and 877.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,632.56 : 3,948.72 = 877.44 : x
2. Step 2: Convert to fraction form
   2,632.56/3,948.72 = 877.44/x
3. Step 3: Cross multiply
   2,632.56x = 3,948.72 × 877.44
4. Step 4: Simplify right side
   2,632.56x = 3,464,764.88
5. Step 5: Solve for x
   x = 3,464,764.88/2,632.56
6. Step 6: Final answer
   x = 1,316.12