Finding the Fourth Proportional to 3,407.25, 5,111.69 and 1,098.75

Step by Step Solution

1. Step 1: Write the proportion equation
   3,407.25 : 5,111.69 = 1,098.75 : x
2. Step 2: Convert to fraction form
   3,407.25/5,111.69 = 1,098.75/x
3. Step 3: Cross multiply
   3,407.25x = 5,111.69 × 1,098.75
4. Step 4: Simplify right side
   3,407.25x = 5,616,463.89
5. Step 5: Solve for x
   x = 5,616,463.89/3,407.25
6. Step 6: Final answer
   x = 1,648.39