Custom Column with earliest date of three other columns

[adambc]

I have a WB with 20+ columns of which 3 are dates ...

I want to add a Custom Column that picks up the earliest date of those 3 columns ...

In Excel (using VBA) I can add =MIN(COL1n, COL2n, COL3n) to each cell in the Custom Column AFTER the Power Query has run but ...

Can I emulate this in the Power Query itself?

 

[adambc]

UPDATE …

The Excel formula I need to “emulate” in a Power Query is actually …

MIN(COL1n, MAX(COL1n, COL2n, COL3n))

 

[adambc]

SOLVED MYSELF ...

Custom Column
= List.Min({[COL1],List.Max({[COL1],[COL2],[COL3]})})