Finding the Fourth Proportional to 3,969.47, 5,477.94 and 2,290.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,969.47 : 5,477.94 = 2,290.59 : x
2. Step 2: Convert to fraction form
   3,969.47/5,477.94 = 2,290.59/x
3. Step 3: Cross multiply
   3,969.47x = 5,477.94 × 2,290.59
4. Step 4: Simplify right side
   3,969.47x = 12,547,714.58
5. Step 5: Solve for x
   x = 12,547,714.58/3,969.47
6. Step 6: Final answer
   x = 3,161.05