Final answer:
Aryana earned $495.79 last week.
Step-by-step explanation:
To calculate Aryana's earnings last week, we need to determine her commission based on her shoe sales. As mentioned in the question, Aryana's weekly salary is $440 plus 4.5% commission.
First, we need to find the total commission by multiplying her shoe sales by 4.5%: $1,237.58 x 0.045 = $55.79.
Next, we add her commission to her weekly salary: $440 + $55.79 = $495.79.
Therefore, Aryana earned $495.79 last week.