Finding the Fourth Proportional to 2,499.43, 3,749.25 and 939.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.43 : 3,749.25 = 939.28 : x
2. Step 2: Convert to fraction form
   2,499.43/3,749.25 = 939.28/x
3. Step 3: Cross multiply
   2,499.43x = 3,749.25 × 939.28
4. Step 4: Simplify right side
   2,499.43x = 3,521,595.54
5. Step 5: Solve for x
   x = 3,521,595.54/2,499.43
6. Step 6: Final answer
   x = 1,408.96