Finding the Fourth Proportional to 3,914.14, 5,401.56 and 2,235.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,914.14 : 5,401.56 = 2,235.78 : x
2. Step 2: Convert to fraction form
   3,914.14/5,401.56 = 2,235.78/x
3. Step 3: Cross multiply
   3,914.14x = 5,401.56 × 2,235.78
4. Step 4: Simplify right side
   3,914.14x = 12,076,699.82
5. Step 5: Solve for x
   x = 12,076,699.82/3,914.14
6. Step 6: Final answer
   x = 3,085.40