Finding the Fourth Proportional to 2,499.96, 3,750.04 and 939.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.96 : 3,750.04 = 939.80 : x
2. Step 2: Convert to fraction form
   2,499.96/3,750.04 = 939.80/x
3. Step 3: Cross multiply
   2,499.96x = 3,750.04 × 939.80
4. Step 4: Simplify right side
   2,499.96x = 3,524,287.59
5. Step 5: Solve for x
   x = 3,524,287.59/2,499.96
6. Step 6: Final answer
   x = 1,409.74