Finding the Fourth Proportional to 1,102.29, 1,521.42 and 729.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,102.29 : 1,521.42 = 729.36 : x
2. Step 2: Convert to fraction form
   1,102.29/1,521.42 = 729.36/x
3. Step 3: Cross multiply
   1,102.29x = 1,521.42 × 729.36
4. Step 4: Simplify right side
   1,102.29x = 1,109,662.89
5. Step 5: Solve for x
   x = 1,109,662.89/1,102.29
6. Step 6: Final answer
   x = 1,006.69