Finding the Fourth Proportional to 498.10, 746.23 and 443.42

Step by Step Solution

1. Step 1: Write the proportion equation
   498.10 : 746.23 = 443.42 : x
2. Step 2: Convert to fraction form
   498.10/746.23 = 443.42/x
3. Step 3: Cross multiply
   498.10x = 746.23 × 443.42
4. Step 4: Simplify right side
   498.10x = 330,893.31
5. Step 5: Solve for x
   x = 330,893.31/498.10
6. Step 6: Final answer
   x = 664.31