Finding the Fourth Proportional to 1,096.47, 1,648.49 and 868.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.47 : 1,648.49 = 868.19 : x
2. Step 2: Convert to fraction form
   1,096.47/1,648.49 = 868.19/x
3. Step 3: Cross multiply
   1,096.47x = 1,648.49 × 868.19
4. Step 4: Simplify right side
   1,096.47x = 1,431,189.95
5. Step 5: Solve for x
   x = 1,431,189.95/1,096.47
6. Step 6: Final answer
   x = 1,305.27