Finding the Fourth Proportional to 1,023.59, 1,532.69 and 878.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,023.59 : 1,532.69 = 878.27 : x
2. Step 2: Convert to fraction form
   1,023.59/1,532.69 = 878.27/x
3. Step 3: Cross multiply
   1,023.59x = 1,532.69 × 878.27
4. Step 4: Simplify right side
   1,023.59x = 1,346,103.59
5. Step 5: Solve for x
   x = 1,346,103.59/1,023.59
6. Step 6: Final answer
   x = 1,315.09