Finding the Fourth Proportional to 2,096.72, 3,145.47 and 863.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,096.72 : 3,145.47 = 863.45 : x
2. Step 2: Convert to fraction form
   2,096.72/3,145.47 = 863.45/x
3. Step 3: Cross multiply
   2,096.72x = 3,145.47 × 863.45
4. Step 4: Simplify right side
   2,096.72x = 2,715,948.90
5. Step 5: Solve for x
   x = 2,715,948.90/2,096.72
6. Step 6: Final answer
   x = 1,295.33