Finding the Fourth Proportional to 3,144.89, 4,338.02 and 2,261.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,144.89 : 4,338.02 = 2,261.88 : x
2. Step 2: Convert to fraction form
   3,144.89/4,338.02 = 2,261.88/x
3. Step 3: Cross multiply
   3,144.89x = 4,338.02 × 2,261.88
4. Step 4: Simplify right side
   3,144.89x = 9,812,086.33
5. Step 5: Solve for x
   x = 9,812,086.33/3,144.89
6. Step 6: Final answer
   x = 3,120.01