To calculate 1 day, 1 hour, and 15 minutes in the future, we start by converting each unit to a common increment, such as minutes. First, we convert 1 day to 1440 minutes (1 day = 24 hours x 60 minutes). Next, we convert 1 hour to 60 minutes. Finally, we add 15 minutes to the total. After the conversions, the total duration in the future would be 1475 minutes.