first of all, if there are 4 members including you then:
after 3 members resigning there remain 1 member that is you. one member cannot form partnership.
if there are 4 members and you, then
leaving 3 members means you and one other member are still there then please give me your name, address, father's/spouces name and i will draft one dead.
you have to first notary the dead then you have to register it. only after that you can start your business.
heres my mail id: firstname.lastname@example.org.