Finding the Fourth Proportional to 4,081.61, 5,632.61 and 2,218.61

Step by Step Solution

1. Step 1: Write the proportion equation
   4,081.61 : 5,632.61 = 2,218.61 : x
2. Step 2: Convert to fraction form
   4,081.61/5,632.61 = 2,218.61/x
3. Step 3: Cross multiply
   4,081.61x = 5,632.61 × 2,218.61
4. Step 4: Simplify right side
   4,081.61x = 12,496,525.62
5. Step 5: Solve for x
   x = 12,496,525.62/4,081.61
6. Step 6: Final answer
   x = 3,061.67