First, we need to calculate what 1/5 of 4,500 is:
\[ \frac{1}{5} \times 4500 = 900 \]
Now that we know the total amount won by the group of 9 people is 900, we can divide this amount by the number of people to determine how much each person received:
\[ \frac{900}{9} = 100 \]
Therefore, each person got 100.