Finding the Fourth Proportional to 2,149.07, 3,223.83 and 916.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,149.07 : 3,223.83 = 916.61 : x
2. Step 2: Convert to fraction form
   2,149.07/3,223.83 = 916.61/x
3. Step 3: Cross multiply
   2,149.07x = 3,223.83 × 916.61
4. Step 4: Simplify right side
   2,149.07x = 2,954,978.70
5. Step 5: Solve for x
   x = 2,954,978.70/2,149.07
6. Step 6: Final answer
   x = 1,375.01