Finding the Fourth Proportional to 353.59, 487.98 and 196.24

Step by Step Solution

1. Step 1: Write the proportion equation
   353.59 : 487.98 = 196.24 : x
2. Step 2: Convert to fraction form
   353.59/487.98 = 196.24/x
3. Step 3: Cross multiply
   353.59x = 487.98 × 196.24
4. Step 4: Simplify right side
   353.59x = 95,761.69
5. Step 5: Solve for x
   x = 95,761.69/353.59
6. Step 6: Final answer
   x = 270.82