Four Seas

At Bharat's request,

1. Jambavan, 
2. Hanuman, 
3. Gavaya and 
4. Rishabha brought water from the four seas 

while five hundred other powerful monkeys brought water from five hundred sacred rivers. These vessels of water were placed before Vasishtha.

Soon after, the rishi had Lord Ram seated along with Sita upon a royal throne. Then, with the assistance of

1. Vamadeva, 
2. Jabali, 
3. Kashyapa, 
4. Katyayana, 
5. Sujagya, 
6. Gautama and 
7. Vijaya Rishis, 

Vasishtha performed the abhishek, and the

1. first bathing was done by the brahmanas. 
2. Next, unmarried virgin girls got the chance to bathe Lord Ram, and 
3. then the ministers, 
4. leading warriors, and 
5. lastly, vaishyas, one after another.

Source

Shri Valmiki Ramayana, Yuddha-kanda