The diameter of circle is 288.84 units
As we know
Circumference of circle = 2*pi*r
where r is radius of the circle
Arranging the equation
C = 2 π r
r = C / 2 π
r = 907.46 / 2 π
r= 144.42
Since Diameter is double of radius so diameter is 2 x 144.42 = 288.84 units