1. The problem asks whether "Three and one fourth" is an example of a proper fraction. 2. A proper fraction is defined as a fraction where the numerator is less than the denominator, for example, $\frac{3}{4}$. 3. "Three and one fourth" is a mixed number, which can be written as $3 \frac{1}{4}$ or as the improper fraction $\frac{13}{4}$. 4. Since $\frac{13}{4}$ has a numerator greater than the denominator, it is an improper fraction, not a proper fraction. 5. Therefore, the statement is False.