Finding the Fourth Proportional to 1,452.78, 2,004.89 and 863.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,452.78 : 2,004.89 = 863.91 : x
2. Step 2: Convert to fraction form
   1,452.78/2,004.89 = 863.91/x
3. Step 3: Cross multiply
   1,452.78x = 2,004.89 × 863.91
4. Step 4: Simplify right side
   1,452.78x = 1,732,040.20
5. Step 5: Solve for x
   x = 1,732,040.20/1,452.78
6. Step 6: Final answer
   x = 1,192.22