Yes, I agree with your calculations. (TurboTax rounds things to the nearest dollar, so it comes up with $1,930 for the employer contribution.)
Where TurboTax tells you that you can defer a maximum of $24,429, that refers to the employee contribution, the Roth contributions in your case. The $1,930 of traditional employer contribution is what you are permitted in addition to the employee deferral, so your entries are correct.
