Finding the Fourth Proportional to 3,543.52, 5,315.55 and 1,078.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,543.52 : 5,315.55 = 1,078.55 : x
2. Step 2: Convert to fraction form
   3,543.52/5,315.55 = 1,078.55/x
3. Step 3: Cross multiply
   3,543.52x = 5,315.55 × 1,078.55
4. Step 4: Simplify right side
   3,543.52x = 5,733,086.45
5. Step 5: Solve for x
   x = 5,733,086.45/3,543.52
6. Step 6: Final answer
   x = 1,617.91