Finding the Fourth Proportional to 2,322.88, 3,485.69 and 863.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,322.88 : 3,485.69 = 863.05 : x
2. Step 2: Convert to fraction form
   2,322.88/3,485.69 = 863.05/x
3. Step 3: Cross multiply
   2,322.88x = 3,485.69 × 863.05
4. Step 4: Simplify right side
   2,322.88x = 3,008,324.75
5. Step 5: Solve for x
   x = 3,008,324.75/2,322.88
6. Step 6: Final answer
   x = 1,295.08