Finding the Fourth Proportional to 2,626.52, 3,940.38 and 872.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,626.52 : 3,940.38 = 872.08 : x
2. Step 2: Convert to fraction form
   2,626.52/3,940.38 = 872.08/x
3. Step 3: Cross multiply
   2,626.52x = 3,940.38 × 872.08
4. Step 4: Simplify right side
   2,626.52x = 3,436,326.59
5. Step 5: Solve for x
   x = 3,436,326.59/2,626.52
6. Step 6: Final answer
   x = 1,308.32