Finding the Fourth Proportional to 3,557.74, 4,909.89 and 2,065.11

Step by Step Solution

1. Step 1: Write the proportion equation
   3,557.74 : 4,909.89 = 2,065.11 : x
2. Step 2: Convert to fraction form
   3,557.74/4,909.89 = 2,065.11/x
3. Step 3: Cross multiply
   3,557.74x = 4,909.89 × 2,065.11
4. Step 4: Simplify right side
   3,557.74x = 10,139,462.94
5. Step 5: Solve for x
   x = 10,139,462.94/3,557.74
6. Step 6: Final answer
   x = 2,849.97