Finding the Fourth Proportional to 2,499.39, 3,749.61 and 939.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.39 : 3,749.61 = 939.41 : x
2. Step 2: Convert to fraction form
   2,499.39/3,749.61 = 939.41/x
3. Step 3: Cross multiply
   2,499.39x = 3,749.61 × 939.41
4. Step 4: Simplify right side
   2,499.39x = 3,522,402.38
5. Step 5: Solve for x
   x = 3,522,402.38/2,499.39
6. Step 6: Final answer
   x = 1,409.31