Finding the Fourth Proportional to 1,151.12, 1,728.56 and 1,092.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,151.12 : 1,728.56 = 1,092.69 : x
2. Step 2: Convert to fraction form
   1,151.12/1,728.56 = 1,092.69/x
3. Step 3: Cross multiply
   1,151.12x = 1,728.56 × 1,092.69
4. Step 4: Simplify right side
   1,151.12x = 1,888,780.23
5. Step 5: Solve for x
   x = 1,888,780.23/1,151.12
6. Step 6: Final answer
   x = 1,640.82