Finding the Fourth Proportional to 1,527.39, 2,107.89 and 864.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,527.39 : 2,107.89 = 864.27 : x
2. Step 2: Convert to fraction form
   1,527.39/2,107.89 = 864.27/x
3. Step 3: Cross multiply
   1,527.39x = 2,107.89 × 864.27
4. Step 4: Simplify right side
   1,527.39x = 1,821,786.09
5. Step 5: Solve for x
   x = 1,821,786.09/1,527.39
6. Step 6: Final answer
   x = 1,192.74