Finding the Fourth Proportional to 1,067.83, 1,597.80 and 911.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,067.83 : 1,597.80 = 911.71 : x
2. Step 2: Convert to fraction form
   1,067.83/1,597.80 = 911.71/x
3. Step 3: Cross multiply
   1,067.83x = 1,597.80 × 911.71
4. Step 4: Simplify right side
   1,067.83x = 1,456,724.10
5. Step 5: Solve for x
   x = 1,456,724.10/1,067.83
6. Step 6: Final answer
   x = 1,364.19