Finding the Fourth Proportional to 2,149.72, 3,224.04 and 916.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,149.72 : 3,224.04 = 916.52 : x
2. Step 2: Convert to fraction form
   2,149.72/3,224.04 = 916.52/x
3. Step 3: Cross multiply
   2,149.72x = 3,224.04 × 916.52
4. Step 4: Simplify right side
   2,149.72x = 2,954,897.14
5. Step 5: Solve for x
   x = 2,954,897.14/2,149.72
6. Step 6: Final answer
   x = 1,374.55