Finding the Fourth Proportional to 1,453.54, 2,005.78 and 863.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,453.54 : 2,005.78 = 863.96 : x
2. Step 2: Convert to fraction form
   1,453.54/2,005.78 = 863.96/x
3. Step 3: Cross multiply
   1,453.54x = 2,005.78 × 863.96
4. Step 4: Simplify right side
   1,453.54x = 1,732,919.78
5. Step 5: Solve for x
   x = 1,732,919.78/1,453.54
6. Step 6: Final answer
   x = 1,192.21