Finding the Fourth Proportional to 1,182.69, 1,632.06 and 789.66

Step by Step Solution

1. Step 1: Write the proportion equation
   1,182.69 : 1,632.06 = 789.66 : x
2. Step 2: Convert to fraction form
   1,182.69/1,632.06 = 789.66/x
3. Step 3: Cross multiply
   1,182.69x = 1,632.06 × 789.66
4. Step 4: Simplify right side
   1,182.69x = 1,288,772.50
5. Step 5: Solve for x
   x = 1,288,772.50/1,182.69
6. Step 6: Final answer
   x = 1,089.70