Finding the Fourth Proportional to 2,096.16, 3,142.28 and 864.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,096.16 : 3,142.28 = 864.60 : x
2. Step 2: Convert to fraction form
   2,096.16/3,142.28 = 864.60/x
3. Step 3: Cross multiply
   2,096.16x = 3,142.28 × 864.60
4. Step 4: Simplify right side
   2,096.16x = 2,716,815.29
5. Step 5: Solve for x
   x = 2,716,815.29/2,096.16
6. Step 6: Final answer
   x = 1,296.09