Finding the Fourth Proportional to 2,674.56, 3,982.18 and 2,661.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,674.56 : 3,982.18 = 2,661.60 : x
2. Step 2: Convert to fraction form
   2,674.56/3,982.18 = 2,661.60/x
3. Step 3: Cross multiply
   2,674.56x = 3,982.18 × 2,661.60
4. Step 4: Simplify right side
   2,674.56x = 10,598,970.29
5. Step 5: Solve for x
   x = 10,598,970.29/2,674.56
6. Step 6: Final answer
   x = 3,962.88