Finding the Fourth Proportional to 3,549.24, 5,323.82 and 916.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,549.24 : 5,323.82 = 916.72 : x
2. Step 2: Convert to fraction form
   3,549.24/5,323.82 = 916.72/x
3. Step 3: Cross multiply
   3,549.24x = 5,323.82 × 916.72
4. Step 4: Simplify right side
   3,549.24x = 4,880,452.27
5. Step 5: Solve for x
   x = 4,880,452.27/3,549.24
6. Step 6: Final answer
   x = 1,375.07