Finding the Fourth Proportional to 443.01, 662.52 and 394.56

Step by Step Solution

1. Step 1: Write the proportion equation
   443.01 : 662.52 = 394.56 : x
2. Step 2: Convert to fraction form
   443.01/662.52 = 394.56/x
3. Step 3: Cross multiply
   443.01x = 662.52 × 394.56
4. Step 4: Simplify right side
   443.01x = 261,403.89
5. Step 5: Solve for x
   x = 261,403.89/443.01
6. Step 6: Final answer
   x = 590.06