Finding the Fourth Proportional to 1,153.92, 1,728.72 and 741.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,153.92 : 1,728.72 = 741.72 : x
2. Step 2: Convert to fraction form
   1,153.92/1,728.72 = 741.72/x
3. Step 3: Cross multiply
   1,153.92x = 1,728.72 × 741.72
4. Step 4: Simplify right side
   1,153.92x = 1,282,226.20
5. Step 5: Solve for x
   x = 1,282,226.20/1,153.92
6. Step 6: Final answer
   x = 1,111.19