Finding the Fourth Proportional to 1,647.68, 2,272.83 and 975.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,647.68 : 2,272.83 = 975.25 : x
2. Step 2: Convert to fraction form
   1,647.68/2,272.83 = 975.25/x
3. Step 3: Cross multiply
   1,647.68x = 2,272.83 × 975.25
4. Step 4: Simplify right side
   1,647.68x = 2,216,563.86
5. Step 5: Solve for x
   x = 2,216,563.86/1,647.68
6. Step 6: Final answer
   x = 1,345.27