Finding the Fourth Proportional to 1,078.94, 1,488.57 and 882.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078.94 : 1,488.57 = 882.38 : x
2. Step 2: Convert to fraction form
   1,078.94/1,488.57 = 882.38/x
3. Step 3: Cross multiply
   1,078.94x = 1,488.57 × 882.38
4. Step 4: Simplify right side
   1,078.94x = 1,313,484.40
5. Step 5: Solve for x
   x = 1,313,484.40/1,078.94
6. Step 6: Final answer
   x = 1,217.38