FGT 100D - WAN Settings (1 Uplink, 3 VDOMs)

Good morning,

i want to configure the following - is it possible?

1 x WAN Uplink including 4 public IPs

3 x VDOMs ( all in NAT Mode) each with one of the public IPs

How to configure this without a switch and uplink to each VDOM WAN interface?

Thanks a lot and a nice weekend

Phil