Finding the Fourth Proportional to 3,545.08, 4,890.89 and 3,539.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,545.08 : 4,890.89 = 3,539.61 : x
2. Step 2: Convert to fraction form
   3,545.08/4,890.89 = 3,539.61/x
3. Step 3: Cross multiply
   3,545.08x = 4,890.89 × 3,539.61
4. Step 4: Simplify right side
   3,545.08x = 17,311,825.45
5. Step 5: Solve for x
   x = 17,311,825.45/3,545.08
6. Step 6: Final answer
   x = 4,883.34