I found this table on the curb a while back, less the leg hardware. No a relative could use it, and I'm wondering how to fix it up.
Cut a couple 2x4 sections to fill the truncated-triangular area and screw through them into all surfaces?
The legs have a hollow center drilled out, at the top, so I assume some metal piece with threaded holes fit there, and a metal plate anchored that to the skirt (?).
Another view:
That would depend on what you have to work with. Some light steel and I would build a metal brace with two small peices attached on the sides with a longer piece welded across them at a 45. Drill two holes in the longer piece and attach to the leg. No welder then I would cut a 4x4 section with a jigsaw to match what I described above and reinforce with large washers or some square steel plate. It wont be as strong but It would work just fine.
Edit: Or after reading below I would order those brackets from amazon.