Finding the Fourth Proportional to 1,647.24, 2,471.59 and 867.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,647.24 : 2,471.59 = 867.05 : x
2. Step 2: Convert to fraction form
   1,647.24/2,471.59 = 867.05/x
3. Step 3: Cross multiply
   1,647.24x = 2,471.59 × 867.05
4. Step 4: Simplify right side
   1,647.24x = 2,142,992.11
5. Step 5: Solve for x
   x = 2,142,992.11/1,647.24
6. Step 6: Final answer
   x = 1,300.96