Prosalentis was born in Corfu and died in Athens. He was the son of the distinguished artist Spyridon Prosalenti who gave him his first lessons in art. He studied at The School of Fine Art, Athens and later engineering in Paris. Prosalentis is exceptional in seascapes with influence from The French School as experienced in Sailing by moonlight. His works are in many private and public collections, notably: The National Gallery, Athens, The War Museum, Athens, The Leventis Gallery, Nicosia, The Averoff Gallery, National Bank of Greece and The Koutlides Collection.