Finding the Fourth Proportional to 2,095.81, 3,144.48 and 863.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,095.81 : 3,144.48 = 863.31 : x
2. Step 2: Convert to fraction form
   2,095.81/3,144.48 = 863.31/x
3. Step 3: Cross multiply
   2,095.81x = 3,144.48 × 863.31
4. Step 4: Simplify right side
   2,095.81x = 2,714,645.31
5. Step 5: Solve for x
   x = 2,714,645.31/2,095.81
6. Step 6: Final answer
   x = 1,295.27