Finding the Fourth Proportional to 3,559.14, 4,910.22 and 2,066.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,559.14 : 4,910.22 = 2,066.78 : x
2. Step 2: Convert to fraction form
   3,559.14/4,910.22 = 2,066.78/x
3. Step 3: Cross multiply
   3,559.14x = 4,910.22 × 2,066.78
4. Step 4: Simplify right side
   3,559.14x = 10,148,356.77
5. Step 5: Solve for x
   x = 10,148,356.77/3,559.14
6. Step 6: Final answer
   x = 2,851.35