Finding the Fourth Proportional to 443.34, 611.81 and 268.69

Step by Step Solution

1. Step 1: Write the proportion equation
   443.34 : 611.81 = 268.69 : x
2. Step 2: Convert to fraction form
   443.34/611.81 = 268.69/x
3. Step 3: Cross multiply
   443.34x = 611.81 × 268.69
4. Step 4: Simplify right side
   443.34x = 164,385.89
5. Step 5: Solve for x
   x = 164,385.89/443.34
6. Step 6: Final answer
   x = 370.79