Finding the Fourth Proportional to 2,627.48, 3,940.98 and 872.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,627.48 : 3,940.98 = 872.30 : x
2. Step 2: Convert to fraction form
   2,627.48/3,940.98 = 872.30/x
3. Step 3: Cross multiply
   2,627.48x = 3,940.98 × 872.30
4. Step 4: Simplify right side
   2,627.48x = 3,437,697.15
5. Step 5: Solve for x
   x = 3,437,697.15/2,627.48
6. Step 6: Final answer
   x = 1,308.37