Finding the Fourth Proportional to 2,770.37, 3,821.27 and 2,012.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,770.37 : 3,821.27 = 2,012.88 : x
2. Step 2: Convert to fraction form
   2,770.37/3,821.27 = 2,012.88/x
3. Step 3: Cross multiply
   2,770.37x = 3,821.27 × 2,012.88
4. Step 4: Simplify right side
   2,770.37x = 7,691,747.89
5. Step 5: Solve for x
   x = 7,691,747.89/2,770.37
6. Step 6: Final answer
   x = 2,776.44