Finding the Fourth Proportional to 1,647.00, 2,272.81 and 1,017.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,647.00 : 2,272.81 = 1,017.28 : x
2. Step 2: Convert to fraction form
   1,647.00/2,272.81 = 1,017.28/x
3. Step 3: Cross multiply
   1,647.00x = 2,272.81 × 1,017.28
4. Step 4: Simplify right side
   1,647.00x = 2,312,067.71
5. Step 5: Solve for x
   x = 2,312,067.71/1,647.00
6. Step 6: Final answer
   x = 1,403.81