Finding the Fourth Proportional to 2,500.10, 3,747.50 and 939.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,500.10 : 3,747.50 = 939.09 : x
2. Step 2: Convert to fraction form
   2,500.10/3,747.50 = 939.09/x
3. Step 3: Cross multiply
   2,500.10x = 3,747.50 × 939.09
4. Step 4: Simplify right side
   2,500.10x = 3,519,239.78
5. Step 5: Solve for x
   x = 3,519,239.78/2,500.10
6. Step 6: Final answer
   x = 1,407.64