When performing hierarchical agglomerative document clustering, we obtain a cluster containing two points: P$1=(34\mathrm{.}24,94\mathrm{.}25)$ and P$2=(420\mathrm{.}84,292\mathrm{.}55)-$ we wish to merge in a third point P$3=(92\mathrm{.}94,26\mathrm{.}46).$ At what dissimilarity value $($using L$1-$norm distance$)$ would the merge be performed, assuming single linkage?