Walton Company has measured its quality costs for the past two years. After the company gathers its quality cost data, it summarizes those costs using the four categories shown below: Last Year This Year Prevention costs $ 371,300 $ 656,500 Appraisal costs $ 471,700 $ 599,500 Internal failure costs $ 726,800 $ 470,000 External failure costs $ 1,155,000 $ 646,000 Required: 1. Calculate the total cost of quality last year and this year. 2. For last year, calculate the cost in each of the four categories as a percent of the total cost of quality. (Round your percentage answers to 1 decimal place.) 3. For this year, calculate the cost in each of the four categories as a percent of the total cost of quality. (Round your percentage answers to 1 decimal place.) 4a. Calculate the change in total cost of quality over the two-year period. 4b. Is performance trending in a favorable or unfavorable direction?