Finding the Fourth Proportional to 3,404.20, 5,111.10 and 2,674.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,404.20 : 5,111.10 = 2,674.60 : x
2. Step 2: Convert to fraction form
   3,404.20/5,111.10 = 2,674.60/x
3. Step 3: Cross multiply
   3,404.20x = 5,111.10 × 2,674.60
4. Step 4: Simplify right side
   3,404.20x = 13,670,148.06
5. Step 5: Solve for x
   x = 13,670,148.06/3,404.20
6. Step 6: Final answer
   x = 4,015.67