The last chord shows the notes: G, A, E, C#.
If we rearrange these into a stack of thirds, we get: A, C#, E, G.
This is a dominant seventh chord: A7.
But, as the note G is in the bass it is: A7/G.
Within a key of D minor, this is represented in roman numeral notation (with the third inversion being shown with a little d) as: V7d.
In figured bass, the figure 2 implies that this is seventh chord in third inversion, the 4 is sharp as we are in the harmonic minor, and a figure 6 is redundant and so not written.