Finding the Fourth Proportional to 3,849.34, 5,310.20 and 2,356.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,849.34 : 5,310.20 = 2,356.78 : x
2. Step 2: Convert to fraction form
   3,849.34/5,310.20 = 2,356.78/x
3. Step 3: Cross multiply
   3,849.34x = 5,310.20 × 2,356.78
4. Step 4: Simplify right side
   3,849.34x = 12,514,973.16
5. Step 5: Solve for x
   x = 12,514,973.16/3,849.34
6. Step 6: Final answer
   x = 3,251.20