Finding the Fourth Proportional to 2,039.10, 3,059.18 and 578.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,039.10 : 3,059.18 = 578.27 : x
2. Step 2: Convert to fraction form
   2,039.10/3,059.18 = 578.27/x
3. Step 3: Cross multiply
   2,039.10x = 3,059.18 × 578.27
4. Step 4: Simplify right side
   2,039.10x = 1,769,013.83
5. Step 5: Solve for x
   x = 1,769,013.83/2,039.10
6. Step 6: Final answer
   x = 867.55