Finding the Fourth Proportional to 1,068.72, 1,601.28 and 743.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,068.72 : 1,601.28 = 743.04 : x
2. Step 2: Convert to fraction form
   1,068.72/1,601.28 = 743.04/x
3. Step 3: Cross multiply
   1,068.72x = 1,601.28 × 743.04
4. Step 4: Simplify right side
   1,068.72x = 1,189,815.09
5. Step 5: Solve for x
   x = 1,189,815.09/1,068.72
6. Step 6: Final answer
   x = 1,113.31