Finding the Fourth Proportional to 1,067.82, 1,473.72 and 648.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,067.82 : 1,473.72 = 648.20 : x
2. Step 2: Convert to fraction form
   1,067.82/1,473.72 = 648.20/x
3. Step 3: Cross multiply
   1,067.82x = 1,473.72 × 648.20
4. Step 4: Simplify right side
   1,067.82x = 955,257.94
5. Step 5: Solve for x
   x = 955,257.94/1,067.82
6. Step 6: Final answer
   x = 894.59