1. **State the problem:** We need to find the sum of the following numbers: $$438.93, 351.14, 657.37, 526.71, 1053.42, 982.82, 175.57, 263.36, 219.46, 87.89, 131.68$$ 2. **Sum the numbers step-by-step:** $$438.93 + 351.14 = 790.07$$ $$790.07 + 657.37 = 1447.44$$ $$1447.44 + 526.71 = 1974.15$$ $$1974.15 + 1053.42 = 3027.57$$ $$3027.57 + 982.82 = 4010.39$$ $$4010.39 + 175.57 = 4185.96$$ $$4185.96 + 263.36 = 4450.32$$ $$4450.32 + 219.46 = 4669.78$$ $$4669.78 + 87.89 = 4757.67$$ $$4757.67 + 131.68 = 4889.35$$ 3. **Final answer:** The total sum is **$4889.35$**.