Finding the Fourth Proportional to 2,659.51, 3,986.96 and 1,098.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,659.51 : 3,986.96 = 1,098.54 : x
2. Step 2: Convert to fraction form
   2,659.51/3,986.96 = 1,098.54/x
3. Step 3: Cross multiply
   2,659.51x = 3,986.96 × 1,098.54
4. Step 4: Simplify right side
   2,659.51x = 4,379,829.55
5. Step 5: Solve for x
   x = 4,379,829.55/2,659.51
6. Step 6: Final answer
   x = 1,646.86