Answer
10.336 meters
Work Step by Step
The hyrostatic pressure exerted by a column of fluid is given by rho*g*h where rho is the density of the fluid, g is 9.81 $m/s^2$ and h is the height of the fluid. In order to find how high the column of water must be we have:
(13.6 g/mL) * (9.81) * 760 mm = (1 g/mL) * (9.81) * h
Here, the gravity drops out so we have that h = 13.6 * 760mm = 10336 mm.
Converting this to meters we have 10.336 meters