Finding the Fourth Proportional to 3,557.82, 4,909.42 and 2,065.45

Step by Step Solution

1. Step 1: Write the proportion equation
   3,557.82 : 4,909.42 = 2,065.45 : x
2. Step 2: Convert to fraction form
   3,557.82/4,909.42 = 2,065.45/x
3. Step 3: Cross multiply
   3,557.82x = 4,909.42 × 2,065.45
4. Step 4: Simplify right side
   3,557.82x = 10,140,161.54
5. Step 5: Solve for x
   x = 10,140,161.54/3,557.82
6. Step 6: Final answer
   x = 2,850.11