Finding the Fourth Proportional to 2,659.68, 3,990.28 and 1,016.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,659.68 : 3,990.28 = 1,016.36 : x
2. Step 2: Convert to fraction form
   2,659.68/3,990.28 = 1,016.36/x
3. Step 3: Cross multiply
   2,659.68x = 3,990.28 × 1,016.36
4. Step 4: Simplify right side
   2,659.68x = 4,055,560.98
5. Step 5: Solve for x
   x = 4,055,560.98/2,659.68
6. Step 6: Final answer
   x = 1,524.83