Finding the Fourth Proportional to 3,406.56, 5,109.72 and 1,098

Step by Step Solution

1. Step 1: Write the proportion equation
   3,406.56 : 5,109.72 = 1,098 : x
2. Step 2: Convert to fraction form
   3,406.56/5,109.72 = 1,098/x
3. Step 3: Cross multiply
   3,406.56x = 5,109.72 × 1,098
4. Step 4: Simplify right side
   3,406.56x = 5,610,472.56
5. Step 5: Solve for x
   x = 5,610,472.56/3,406.56
6. Step 6: Final answer
   x = 1,646.96