how to set a public ip

Hi
I have 3 microtics connected one by one all of them with no public ip. i have a public ip and i should set it to the third router. what configuration should i set to the first two routers in order to follow the public ip to the third mikrotik. I need this in my busines. thnx in response

Answering to my self after solving the problem in the real live

  1. set routes to the routers and make sure you have ping from your first router to the last router
  2. if ping is ok use this command:
add chain=dstnat action=dst-nat protocol=tcp dst-address=10.0.0.217/32 dst-port=1-65535 to-addresses=192.168.0.4

by replacing 10.0.0.217/32 with you real ip and 10.0.0.217 with your last router ip.