let
Source = Excel.CurrentWorkbook(){[Name="Tableau1"]}[Content],
#"Type modifié" = Table.TransformColumnTypes(Source,{{"Colonne1", type any}, {"Colonne2", type any}, {"Colonne3", type any}, {"Colonne4", type any}}),
#"Colonnes permutées" = Table.ReorderColumns(#"Type modifié",{"Colonne4", "Colonne2", "Colonne3", "Colonne1"})
in
#"Colonnes permutées"