Finding the Fourth Proportional to 3,579.42, 4,939.73 and 2,087.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,579.42 : 4,939.73 = 2,087.10 : x
2. Step 2: Convert to fraction form
   3,579.42/4,939.73 = 2,087.10/x
3. Step 3: Cross multiply
   3,579.42x = 4,939.73 × 2,087.10
4. Step 4: Simplify right side
   3,579.42x = 10,309,700.05
5. Step 5: Solve for x
   x = 10,309,700.05/3,579.42
6. Step 6: Final answer
   x = 2,880.27