motivate (someone) by (something)

Translations
мотивировать (кого-то) с помощью (чего-то)
The manager motivated the employees by offering bonuses.
Менеджер мотивировал сотрудников, предлагая бонусы.
Definitions
To inspire or encourage someone to take action or pursue a goal by using a specific reason, incentive, or source of inspiration.