Finding the Fourth Proportional to 3,290.72, 4,541.28 and 3,143.04

Step by Step Solution

1. Step 1: Write the proportion equation
   3,290.72 : 4,541.28 = 3,143.04 : x
2. Step 2: Convert to fraction form
   3,290.72/4,541.28 = 3,143.04/x
3. Step 3: Cross multiply
   3,290.72x = 4,541.28 × 3,143.04
4. Step 4: Simplify right side
   3,290.72x = 14,273,424.69
5. Step 5: Solve for x
   x = 14,273,424.69/3,290.72
6. Step 6: Final answer
   x = 4,337.48