Finding the Fourth Proportional to 3,404.22, 5,115.94 and 2,017.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,404.22 : 5,115.94 = 2,017.80 : x
2. Step 2: Convert to fraction form
   3,404.22/5,115.94 = 2,017.80/x
3. Step 3: Cross multiply
   3,404.22x = 5,115.94 × 2,017.80
4. Step 4: Simplify right side
   3,404.22x = 10,322,943.73
5. Step 5: Solve for x
   x = 10,322,943.73/3,404.22
6. Step 6: Final answer
   x = 3,032.40