Finding the Fourth Proportional to 1,067.91, 1,473.77 and 805.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,067.91 : 1,473.77 = 805.47 : x
2. Step 2: Convert to fraction form
   1,067.91/1,473.77 = 805.47/x
3. Step 3: Cross multiply
   1,067.91x = 1,473.77 × 805.47
4. Step 4: Simplify right side
   1,067.91x = 1,187,077.52
5. Step 5: Solve for x
   x = 1,187,077.52/1,067.91
6. Step 6: Final answer
   x = 1,111.59