Finding the Fourth Proportional to 3,969.54, 5,477.90 and 2,290.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,969.54 : 5,477.90 = 2,290.96 : x
2. Step 2: Convert to fraction form
   3,969.54/5,477.90 = 2,290.96/x
3. Step 3: Cross multiply
   3,969.54x = 5,477.90 × 2,290.96
4. Step 4: Simplify right side
   3,969.54x = 12,549,649.78
5. Step 5: Solve for x
   x = 12,549,649.78/3,969.54
6. Step 6: Final answer
   x = 3,161.49