Finding the Fourth Proportional to 1,187.27, 1,768.72 and 1,133.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,187.27 : 1,768.72 = 1,133.97 : x
2. Step 2: Convert to fraction form
   1,187.27/1,768.72 = 1,133.97/x
3. Step 3: Cross multiply
   1,187.27x = 1,768.72 × 1,133.97
4. Step 4: Simplify right side
   1,187.27x = 2,005,671.27
5. Step 5: Solve for x
   x = 2,005,671.27/1,187.27
6. Step 6: Final answer
   x = 1,689.31