Finding the Fourth Proportional to 1,150.12, 1,727.06 and 1,091.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.12 : 1,727.06 = 1,091.69 : x
2. Step 2: Convert to fraction form
   1,150.12/1,727.06 = 1,091.69/x
3. Step 3: Cross multiply
   1,150.12x = 1,727.06 × 1,091.69
4. Step 4: Simplify right side
   1,150.12x = 1,885,414.13
5. Step 5: Solve for x
   x = 1,885,414.13/1,150.12
6. Step 6: Final answer
   x = 1,639.32