Final answer:
The distance in standard notation is 1.746 km.
Step-by-step explanation:
To convert the distance from standard notation to scientific notation, we need to move the decimal point until there is only one non-zero digit to the left of it. In this case, since the distance is given as 1.746 x 10^3 km, the decimal point is already in the correct position. Therefore, the distance in standard notation remains the same: 1.746 km.