Finding the Fourth Proportional to 2,017.24, 3,023.43 and 860.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.24 : 3,023.43 = 860.56 : x
2. Step 2: Convert to fraction form
   2,017.24/3,023.43 = 860.56/x
3. Step 3: Cross multiply
   2,017.24x = 3,023.43 × 860.56
4. Step 4: Simplify right side
   2,017.24x = 2,601,842.92
5. Step 5: Solve for x
   x = 2,601,842.92/2,017.24
6. Step 6: Final answer
   x = 1,289.80