To convert the mixed number 2 4/9 into an improper fraction, you need to follow a simple process. First, take the whole number (which is 2) and multiply it by the denominator of the fractional part (which is 9). So, you calculate 2 x 9 = 18.
Next, you add the result to the numerator of the fractional part (which is 4). This gives you 18 + 4 = 22.
Finally, you place this sum over the original denominator. Therefore, 2 4/9 becomes 22/9 as an improper fraction.
In conclusion, the improper fraction for 2 4/9 is 22/9.