Finding the Fourth Proportional to 3,782.69, 5,218.86 and 2,290.04

Step by Step Solution

1. Step 1: Write the proportion equation
   3,782.69 : 5,218.86 = 2,290.04 : x
2. Step 2: Convert to fraction form
   3,782.69/5,218.86 = 2,290.04/x
3. Step 3: Cross multiply
   3,782.69x = 5,218.86 × 2,290.04
4. Step 4: Simplify right side
   3,782.69x = 11,951,398.15
5. Step 5: Solve for x
   x = 11,951,398.15/3,782.69
6. Step 6: Final answer
   x = 3,159.50