Finding the Fourth Proportional to 2,499.93, 3,749.67 and 939.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.93 : 3,749.67 = 939.20 : x
2. Step 2: Convert to fraction form
   2,499.93/3,749.67 = 939.20/x
3. Step 3: Cross multiply
   2,499.93x = 3,749.67 × 939.20
4. Step 4: Simplify right side
   2,499.93x = 3,521,690.06
5. Step 5: Solve for x
   x = 3,521,690.06/2,499.93
6. Step 6: Final answer
   x = 1,408.72