Finding the Fourth Proportional to 935.82, 1,403.72 and 422.82

Step by Step Solution

1. Step 1: Write the proportion equation
   935.82 : 1,403.72 = 422.82 : x
2. Step 2: Convert to fraction form
   935.82/1,403.72 = 422.82/x
3. Step 3: Cross multiply
   935.82x = 1,403.72 × 422.82
4. Step 4: Simplify right side
   935.82x = 593,520.89
5. Step 5: Solve for x
   x = 593,520.89/935.82
6. Step 6: Final answer
   x = 634.23