Finding the Fourth Proportional to 1,067.21, 1,472.61 and 595.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,067.21 : 1,472.61 = 595.05 : x
2. Step 2: Convert to fraction form
   1,067.21/1,472.61 = 595.05/x
3. Step 3: Cross multiply
   1,067.21x = 1,472.61 × 595.05
4. Step 4: Simplify right side
   1,067.21x = 876,278.77
5. Step 5: Solve for x
   x = 876,278.77/1,067.21
6. Step 6: Final answer
   x = 821.09