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 $ 357,000 $ 637,000 Appraisal costs $ 485,100 $ 594,100 Internal failure costs $ 829,500 $ 550,000 External failure costs $ 1,012,000 $ 720,800 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. 3. For this year, calculate the cost in each of the four categories as a percent of the total cost of quality. 4-a. Calculate the change in total cost of quality over the two-year period. 4-b. Is performance trending in a favorable or unfavorable direction?