Finding the Fourth Proportional to 3,671.70, 5,066.46 and 2,158.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,671.70 : 5,066.46 = 2,158.62 : x
2. Step 2: Convert to fraction form
   3,671.70/5,066.46 = 2,158.62/x
3. Step 3: Cross multiply
   3,671.70x = 5,066.46 × 2,158.62
4. Step 4: Simplify right side
   3,671.70x = 10,936,561.89
5. Step 5: Solve for x
   x = 10,936,561.89/3,671.70
6. Step 6: Final answer
   x = 2,978.61