Finding the Fourth Proportional to 2,646.45, 3,959.42 and 2,273.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,646.45 : 3,959.42 = 2,273.31 : x
2. Step 2: Convert to fraction form
   2,646.45/3,959.42 = 2,273.31/x
3. Step 3: Cross multiply
   2,646.45x = 3,959.42 × 2,273.31
4. Step 4: Simplify right side
   2,646.45x = 9,000,977.71
5. Step 5: Solve for x
   x = 9,000,977.71/2,646.45
6. Step 6: Final answer
   x = 3,401.15