Answer:
1,036,800 in year 2018
Explanation:
20% of 600,000 is 120,000
120,000+600,000=720,000
720,000 in year 2016
20% of 720,000 is 144,000
720,000+144,000=864,000
864,000 in year 2017
20% of 864,000 is 172,800
172,800+864,000=1,036,800
1,036,800 in 2018