Finding the Fourth Proportional to 3,545.31, 5,318.55 and 1,079.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,545.31 : 5,318.55 = 1,079.52 : x
2. Step 2: Convert to fraction form
   3,545.31/5,318.55 = 1,079.52/x
3. Step 3: Cross multiply
   3,545.31x = 5,318.55 × 1,079.52
4. Step 4: Simplify right side
   3,545.31x = 5,741,481.10
5. Step 5: Solve for x
   x = 5,741,481.10/3,545.31
6. Step 6: Final answer
   x = 1,619.46