Finding the Fourth Proportional to 3,861.89, 5,329.61 and 2,183.36

Step by Step Solution

1. Step 1: Write the proportion equation
   3,861.89 : 5,329.61 = 2,183.36 : x
2. Step 2: Convert to fraction form
   3,861.89/5,329.61 = 2,183.36/x
3. Step 3: Cross multiply
   3,861.89x = 5,329.61 × 2,183.36
4. Step 4: Simplify right side
   3,861.89x = 11,636,419.72
5. Step 5: Solve for x
   x = 11,636,419.72/3,861.89
6. Step 6: Final answer
   x = 3,013.15