Finding the Fourth Proportional to 2,859.24, 4,289.52 and 911.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,859.24 : 4,289.52 = 911.52 : x
2. Step 2: Convert to fraction form
   2,859.24/4,289.52 = 911.52/x
3. Step 3: Cross multiply
   2,859.24x = 4,289.52 × 911.52
4. Step 4: Simplify right side
   2,859.24x = 3,909,983.27
5. Step 5: Solve for x
   x = 3,909,983.27/2,859.24
6. Step 6: Final answer
   x = 1,367.49