Finding the Fourth Proportional to 2,012.05, 3,017.72 and 550.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.05 : 3,017.72 = 550.85 : x
2. Step 2: Convert to fraction form
   2,012.05/3,017.72 = 550.85/x
3. Step 3: Cross multiply
   2,012.05x = 3,017.72 × 550.85
4. Step 4: Simplify right side
   2,012.05x = 1,662,311.06
5. Step 5: Solve for x
   x = 1,662,311.06/2,012.05
6. Step 6: Final answer
   x = 826.18