Finding the Fourth Proportional to 1,103.48, 1,522.88 and 729.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.48 : 1,522.88 = 729.81 : x
2. Step 2: Convert to fraction form
   1,103.48/1,522.88 = 729.81/x
3. Step 3: Cross multiply
   1,103.48x = 1,522.88 × 729.81
4. Step 4: Simplify right side
   1,103.48x = 1,111,413.05
5. Step 5: Solve for x
   x = 1,111,413.05/1,103.48
6. Step 6: Final answer
   x = 1,007.19