Finding the Fourth Proportional to 298.82, 411.89 and 222.99

Step by Step Solution

1. Step 1: Write the proportion equation
   298.82 : 411.89 = 222.99 : x
2. Step 2: Convert to fraction form
   298.82/411.89 = 222.99/x
3. Step 3: Cross multiply
   298.82x = 411.89 × 222.99
4. Step 4: Simplify right side
   298.82x = 91,847.91
5. Step 5: Solve for x
   x = 91,847.91/298.82
6. Step 6: Final answer
   x = 307.37