Finding the Fourth Proportional to 2,764.35, 4,140.45 and 2,456.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,764.35 : 4,140.45 = 2,456.55 : x
2. Step 2: Convert to fraction form
   2,764.35/4,140.45 = 2,456.55/x
3. Step 3: Cross multiply
   2,764.35x = 4,140.45 × 2,456.55
4. Step 4: Simplify right side
   2,764.35x = 10,171,222.45
5. Step 5: Solve for x
   x = 10,171,222.45/2,764.35
6. Step 6: Final answer
   x = 3,679.43