Finding the Fourth Proportional to 1,097.32, 1,647.02 and 789.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,097.32 : 1,647.02 = 789.48 : x
2. Step 2: Convert to fraction form
   1,097.32/1,647.02 = 789.48/x
3. Step 3: Cross multiply
   1,097.32x = 1,647.02 × 789.48
4. Step 4: Simplify right side
   1,097.32x = 1,300,289.35
5. Step 5: Solve for x
   x = 1,300,289.35/1,097.32
6. Step 6: Final answer
   x = 1,184.97