Installing Leviton Smart Switches on 4-way Circuit
Nope, can't do it.  All the smart switches need neutral, and neutral does not exist at all in this circuit.
The black and white between lamp and first 3-way is

White = always-hot  (must be re-marked with tapeto be black)
Black = switched-hot (I suggest re-marking with tape to be red)

You'll need either a very carefully chosen dimmer that does not need neutral, or replace that cable run with /3 cable (black, white, red).