Final answer:
The approximate percentage of buyers who paid between 1800 and 1855 is approximately 55.6%.
Step-by-step explanation:
To find the approximate percentage of buyers who paid between 1800 and 1855, we need to determine the number of buyers within that range and divide it by the total number of buyers. From the given information, the payments range from $1,000 to $9,000. Based on this, we can calculate that there are 10 buyers whose payments fall between 1800 and 1855 (2000, 2100, 2800, 3500, 4200, 4900, 5600, 6300, 7000, 7700). The total number of buyers is 18. Therefore, the approximate percentage of buyers who paid between 1800 and 1855 is (10/18) x 100% which is approximately 55.6%.