we can write fraction to decimal
1 1/8=1.13 teaspoon of salt
2 2/3=2.67kg of ground pork
We can right their relationship as
1.13 teaspoon of salt/1kg ground pork
2.67kg of ground pork=(1.13 teaspoon of salt/1kg ground pork=3.02 teaspoon of salt
Therefore for every 2 2/3kg of groundpork, she would use 3.02 teaspoon of salt