Finding the Fourth Proportional to 1,528.14, 2,288.82 and 868.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,528.14 : 2,288.82 = 868.50 : x
2. Step 2: Convert to fraction form
   1,528.14/2,288.82 = 868.50/x
3. Step 3: Cross multiply
   1,528.14x = 2,288.82 × 868.50
4. Step 4: Simplify right side
   1,528.14x = 1,987,840.17
5. Step 5: Solve for x
   x = 1,987,840.17/1,528.14
6. Step 6: Final answer
   x = 1,300.82