Finding the Fourth Proportional to 288.89, 398.59 and 162.82

Step by Step Solution

1. Step 1: Write the proportion equation
   288.89 : 398.59 = 162.82 : x
2. Step 2: Convert to fraction form
   288.89/398.59 = 162.82/x
3. Step 3: Cross multiply
   288.89x = 398.59 × 162.82
4. Step 4: Simplify right side
   288.89x = 64,898.42
5. Step 5: Solve for x
   x = 64,898.42/288.89
6. Step 6: Final answer
   x = 224.65