How to predict withholding for a 2024 Vanguard fund sale?

Assuming a Vanguard fund sale has been performed in Q1 of 2024:

 

The 1099-DIV (or Consolidated Form 1099-2021) for 2024 has not been produced yet by Vanguard.

But I would like to avoid late withholding payment penalties and interest. Which means I should "guesstimate" that taxes I am expected to pay by April 2025...

What is the recommended way to accomplish that?

 

Thank you