To calculate the maximum amount that should be used for fixed expenses per month from a weekly income of $834.26, we first need to determine the monthly income. Since there are about 4.33 weeks in a month on average, we can calculate the monthly income as follows:
\[ \text{Monthly Income} = \text{Weekly Income} \times 4.33 \]
Substituting in the weekly income:
\[ \text{Monthly Income} = 834.26 \times 4.33 \approx 3,617.08 \]
Now, a common guideline for budgeting fixed expenses is to keep them around 50% of your total income, though this percentage can vary based on individual circumstances. To find 50% of the monthly income:
\[ \text{Max Fixed Expenses} = 3,617.08 \times 0.50 \approx 1,808.54 \]
So, rounding to the nearest penny, the maximum amount that should be used for fixed expenses per month is:
\[ \text{Max Fixed Expenses} = \mathbf{1,808.54} \]
Thus, the answer is $1,808.54.