Finding the Fourth Proportional to 3,654.56, 5,474.88 and 2,418.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,654.56 : 5,474.88 = 2,418.40 : x
2. Step 2: Convert to fraction form
   3,654.56/5,474.88 = 2,418.40/x
3. Step 3: Cross multiply
   3,654.56x = 5,474.88 × 2,418.40
4. Step 4: Simplify right side
   3,654.56x = 13,240,449.79
5. Step 5: Solve for x
   x = 13,240,449.79/3,654.56
6. Step 6: Final answer
   x = 3,622.99