Finding the Fourth Proportional to 2,659.47, 3,990.21 and 1,016.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,659.47 : 3,990.21 = 1,016.38 : x
2. Step 2: Convert to fraction form
   2,659.47/3,990.21 = 1,016.38/x
3. Step 3: Cross multiply
   2,659.47x = 3,990.21 × 1,016.38
4. Step 4: Simplify right side
   2,659.47x = 4,055,569.64
5. Step 5: Solve for x
   x = 4,055,569.64/2,659.47
6. Step 6: Final answer
   x = 1,524.95