Finding the Fourth Proportional to 3,557.70, 4,909.59 and 2,065.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,557.70 : 4,909.59 = 2,065.59 : x
2. Step 2: Convert to fraction form
   3,557.70/4,909.59 = 2,065.59/x
3. Step 3: Cross multiply
   3,557.70x = 4,909.59 × 2,065.59
4. Step 4: Simplify right side
   3,557.70x = 10,141,200.01
5. Step 5: Solve for x
   x = 10,141,200.01/3,557.70
6. Step 6: Final answer
   x = 2,850.49