Finding the Fourth Proportional to 258.34, 387.55 and 162.82

Step by Step Solution

1. Step 1: Write the proportion equation
   258.34 : 387.55 = 162.82 : x
2. Step 2: Convert to fraction form
   258.34/387.55 = 162.82/x
3. Step 3: Cross multiply
   258.34x = 387.55 × 162.82
4. Step 4: Simplify right side
   258.34x = 63,100.89
5. Step 5: Solve for x
   x = 63,100.89/258.34
6. Step 6: Final answer
   x = 244.26