Finding the Fourth Proportional to 298.72, 448.72 and 234.72

Step by Step Solution

1. Step 1: Write the proportion equation
   298.72 : 448.72 = 234.72 : x
2. Step 2: Convert to fraction form
   298.72/448.72 = 234.72/x
3. Step 3: Cross multiply
   298.72x = 448.72 × 234.72
4. Step 4: Simplify right side
   298.72x = 105,323.56
5. Step 5: Solve for x
   x = 105,323.56/298.72
6. Step 6: Final answer
   x = 352.58