Where does “procans” come from?

procans (Latin) comes from Latin proco, from Latin procus, from Proto-Italic *prokos, from Proto-Indo-European preḱ-, from Proto-Indo-European pr̥ḱneh₂.

Definitions

Ancestry of “procans”, step by step

Step	Language	Word	Meaning
1	Latin	proco	I ask, urge, demand
2	Latin	procus	wooer, suitor; Alternative form of procer
3	Proto-Italic	*prokos	—
4	Proto-Indo-European	preḱ-	to ask
5	Proto-Indo-European	pr̥ḱneh₂	—

Every word from Proto-Indo-European pr̥ḱneh₂ →Every word from Proto-Indo-European preḱ- →Every word from Proto-Italic *prokos →