Finding the Fourth Proportional to 2,499.67, 3,748.98 and 939.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.67 : 3,748.98 = 939.61 : x
2. Step 2: Convert to fraction form
   2,499.67/3,748.98 = 939.61/x
3. Step 3: Cross multiply
   2,499.67x = 3,748.98 × 939.61
4. Step 4: Simplify right side
   2,499.67x = 3,522,569.73
5. Step 5: Solve for x
   x = 3,522,569.73/2,499.67
6. Step 6: Final answer
   x = 1,409.22