Finding the Fourth Proportional to 3,724.56, 5,579.69 and 1,871.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,724.56 : 5,579.69 = 1,871.15 : x
2. Step 2: Convert to fraction form
   3,724.56/5,579.69 = 1,871.15/x
3. Step 3: Cross multiply
   3,724.56x = 5,579.69 × 1,871.15
4. Step 4: Simplify right side
   3,724.56x = 10,440,399.69
5. Step 5: Solve for x
   x = 10,440,399.69/3,724.56
6. Step 6: Final answer
   x = 2,803.12