Finding the Fourth Proportional to 3,424.72, 5,137.59 and 1,084.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,424.72 : 5,137.59 = 1,084.20 : x
2. Step 2: Convert to fraction form
   3,424.72/5,137.59 = 1,084.20/x
3. Step 3: Cross multiply
   3,424.72x = 5,137.59 × 1,084.20
4. Step 4: Simplify right side
   3,424.72x = 5,570,175.08
5. Step 5: Solve for x
   x = 5,570,175.08/3,424.72
6. Step 6: Final answer
   x = 1,626.46