Finding the Fourth Proportional to 404.42, 606.71 and 173.31

Step by Step Solution

1. Step 1: Write the proportion equation
   404.42 : 606.71 = 173.31 : x
2. Step 2: Convert to fraction form
   404.42/606.71 = 173.31/x
3. Step 3: Cross multiply
   404.42x = 606.71 × 173.31
4. Step 4: Simplify right side
   404.42x = 105,148.04
5. Step 5: Solve for x
   x = 105,148.04/404.42
6. Step 6: Final answer
   x = 260.00