How to get on top of a platform with a thief's grappling hook?

How to get on top of a platform with a thief's grappling hook? - Couple Admiring Mountain View from Platform on Rock

This question answers for Trine 2. I'm trying Trine 3 now and I can't pull this off. Is it still possible in Trine 3? If yes, how?

trine-3

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How To Pickpocket (Learn from the Experts!)

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Images: Melissa Sombrerero, Maria Orlova, Luciann Photography, Tirachard Kumtanom