Let $${ T }_{ n }n=1,2,3,4$$ represents four distinct positive real numbers other than unity such that $$\left( In{ T }_{ n },\dfrac { 1 }{ In{ T }_{ n } } \right) $$ represents a point on a circle whose centre lies on $$y$$ - axis, then $$\sum _{ i=1 }^{ 4 }{ { T }_{ i } } $$ is greater than _________.