Hi there!
Your question asks to convert 1 4/7 as a improper fraction.
Start with the denominator, which is 7 in your case.
Start with multiplying 7 to 1 then adding that to 4. Remember that your denominator always stays to same.
So 7 × 1 = 7
You will be left with this, 7 4/7
Now add 7 to 4 and that will be 11
Your answer is 11/7.
I hope this helped!