Finding the Fourth Proportional to 1,171.32, 1,615.59 and 797.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,171.32 : 1,615.59 = 797.73 : x
2. Step 2: Convert to fraction form
   1,171.32/1,615.59 = 797.73/x
3. Step 3: Cross multiply
   1,171.32x = 1,615.59 × 797.73
4. Step 4: Simplify right side
   1,171.32x = 1,288,804.61
5. Step 5: Solve for x
   x = 1,288,804.61/1,171.32
6. Step 6: Final answer
   x = 1,100.30