Finding the Fourth Proportional to 2,712.86, 4,069.59 and 863.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,712.86 : 4,069.59 = 863.33 : x
2. Step 2: Convert to fraction form
   2,712.86/4,069.59 = 863.33/x
3. Step 3: Cross multiply
   2,712.86x = 4,069.59 × 863.33
4. Step 4: Simplify right side
   2,712.86x = 3,513,375.55
5. Step 5: Solve for x
   x = 3,513,375.55/2,712.86
6. Step 6: Final answer
   x = 1,295.08