Final answer:
The vase can hold 722 milliliters more water.
Step-by-step explanation:
To find out how much more water the vase will hold, we need to subtract the initial amount of water from the capacity of the vase. First, we convert 1 liter 299 milliliters into milliliters by multiplying 1 liter by 1,000 and adding 299 milliliters. So, 1 liter 299 milliliters is equal to 1,299 milliliters. Next, we add 398 milliliters to 1,299 milliliters to get the total amount of water poured into the vase, which is 1,697 milliliters. Finally, we subtract 1,697 milliliters from the capacity of the vase, which is 2,419 milliliters.
Therefore, the vase can hold 722 milliliters more water.