Finding the Fourth Proportional to 3,581.69, 4,942.74 and 2,009.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,581.69 : 4,942.74 = 2,009.78 : x
2. Step 2: Convert to fraction form
   3,581.69/4,942.74 = 2,009.78/x
3. Step 3: Cross multiply
   3,581.69x = 4,942.74 × 2,009.78
4. Step 4: Simplify right side
   3,581.69x = 9,933,795.28
5. Step 5: Solve for x
   x = 9,933,795.28/3,581.69
6. Step 6: Final answer
   x = 2,773.50