Finding the Fourth Proportional to 3,870.52, 5,344.85 and 2,814.37

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.52 : 5,344.85 = 2,814.37 : x
2. Step 2: Convert to fraction form
   3,870.52/5,344.85 = 2,814.37/x
3. Step 3: Cross multiply
   3,870.52x = 5,344.85 × 2,814.37
4. Step 4: Simplify right side
   3,870.52x = 15,042,379.17
5. Step 5: Solve for x
   x = 15,042,379.17/3,870.52
6. Step 6: Final answer
   x = 3,886.40