Finding the Fourth Proportional to 3,969.24, 5,476.29 and 2,290.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,969.24 : 5,476.29 = 2,290.42 : x
2. Step 2: Convert to fraction form
   3,969.24/5,476.29 = 2,290.42/x
3. Step 3: Cross multiply
   3,969.24x = 5,476.29 × 2,290.42
4. Step 4: Simplify right side
   3,969.24x = 12,543,002.40
5. Step 5: Solve for x
   x = 12,543,002.40/3,969.24
6. Step 6: Final answer
   x = 3,160.05