Finding the Fourth Proportional to 3,868.57, 5,338.73 and 2,275.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,868.57 : 5,338.73 = 2,275.34 : x
2. Step 2: Convert to fraction form
   3,868.57/5,338.73 = 2,275.34/x
3. Step 3: Cross multiply
   3,868.57x = 5,338.73 × 2,275.34
4. Step 4: Simplify right side
   3,868.57x = 12,147,404.91
5. Step 5: Solve for x
   x = 12,147,404.91/3,868.57
6. Step 6: Final answer
   x = 3,140.03