Finding the Fourth Proportional to 1,065.32, 1,596.56 and 789.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,065.32 : 1,596.56 = 789.18 : x
2. Step 2: Convert to fraction form
   1,065.32/1,596.56 = 789.18/x
3. Step 3: Cross multiply
   1,065.32x = 1,596.56 × 789.18
4. Step 4: Simplify right side
   1,065.32x = 1,259,973.22
5. Step 5: Solve for x
   x = 1,259,973.22/1,065.32
6. Step 6: Final answer
   x = 1,182.72