Finding the Fourth Proportional to 3,650.69, 5,037.84 and 2,158.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,650.69 : 5,037.84 = 2,158.61 : x
2. Step 2: Convert to fraction form
   3,650.69/5,037.84 = 2,158.61/x
3. Step 3: Cross multiply
   3,650.69x = 5,037.84 × 2,158.61
4. Step 4: Simplify right side
   3,650.69x = 10,874,706.61
5. Step 5: Solve for x
   x = 10,874,706.61/3,650.69
6. Step 6: Final answer
   x = 2,978.81