Total def = (Base def * 1.5 + 1)*(1+ Runeword Multiplier + Superior Multiplier) + 15
Factor 1.5 to Base def comes from bonus for eth items, +1 since superior items always spawn with 1 more def than max Base def. +15 def in the end comes from El rune
Fortitude gives 200%ed, so Runeword Multiplier =2. Assuming Superior Multiplier =0.15 (15ed on base), you can get the following numbers:
Dusk Shroud: 2224 (because numbers rounded down in D2 iirc)
Wyrmhide: 2238
Scarab Husk: 2257
Wire Fleece: 2290
Diamond Mail: 2328
Loricated Mail: 2361
Great Hauberk: 2385
Boneweave: 2404
Balrog Skin: 2460
Archon Plate: 2494
Kraken Shell: 2489
Hellforged Plate: 2522
Lacquered Plate: 2574
Shadow Plate: 2649
Sacred Armor: 2853
if i made a mistake, feel free to correct