The following unemployment tax rate schedule is in effect for the calendar year $2023$ in State A$,$ which uses the reserve$-$ratio formula in determining employer contributions:

Reserve Ratio Contribution Rate

$0\mathrm{.}0\%$ or more, but less than $1\mathrm{.}0\%6\mathrm{.}7\%$

$1\mathrm{.}0\%$ or more, but less than $1\mathrm{.}2\%6\mathrm{.}4\%$

$1\mathrm{.}2\%$ or more, but less than $1\mathrm{.}4\%6\mathrm{.}1\%$

$1\mathrm{.}4\%$ or more, but less than $1\mathrm{.}6\%5\mathrm{.}8\%$

$1\mathrm{.}6\%$ or more, but less than $1\mathrm{.}8\%5\mathrm{.}5\%$

$1\mathrm{.}8\%$ or more, but less than $2\mathrm{.}0\%5\mathrm{.}2\%$

$2\mathrm{.}0\%$ or more, but less than $2\mathrm{.}2\%4\mathrm{.}9\%$

$2\mathrm{.}2\%$ or more, but less than $2\mathrm{.}4\%4\mathrm{.}6\%$

$2\mathrm{.}4\%$ or more, but less than $2\mathrm{.}6\%4\mathrm{.}3\%$

$2\mathrm{.}6\%$ or more, but less than $2\mathrm{.}8\%4\mathrm{.}0\%$

$2\mathrm{.}8\%$ or more, but less than $3\mathrm{.}0\%3\mathrm{.}7\%$

$3\mathrm{.}0\%$ or more, but less than $3\mathrm{.}2\%3\mathrm{.}4\%$

$3\mathrm{.}2\%$ or more $3\mathrm{.}1\%$

Hyram Company, which is located in State A$,$ had an average annual payroll of $$860,000$ for the three $12-$month periods ending on June $30,2022($the computation date for the tax year $2023).$ As of June $30,2022,$ the total contributions that had been made to Hyram Company's reserve account, in excess of the benefits charged, amounted to $$17,716.$ Compute the following:

a$.$ Hyram Company's reserve ratio for $2022.$ Round your answer to two decimal places.

fill in the blank $1$

$2\mathrm{.}06$

$\%$

b$.2023$ contribution rate for the company. Round your answer to one decimal place.

fill in the blank $2$

$4\mathrm{.}9$

$\%$

c$.$ Smallest contribution that the company can make in order to reduce its tax rate if State A permits voluntary contributions.

$fill in the blank $3$

$1,204$

d$.$ Tax savings realized by the company, taking into consideration the voluntary contribution made in $($c$)$ if the taxable payroll in $2023$ is $$980,000.$

$fill in the blank $4$