Consider the following spot interest rates for maturities of one, two, three, and four years.

r$1=4\mathrm{.}6\%$ r$2=5\mathrm{.}2\%$ r$3=6\mathrm{.}1\%$ r$4=6\mathrm{.}9\%$

What are the following forward rates, where fk$,1$ refers to a forward rate beginning in k years and extending for $1$ year?