Finding the Fourth Proportional to 1,143.50, 1,578.18 and 848.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,143.50 : 1,578.18 = 848.84 : x
2. Step 2: Convert to fraction form
   1,143.50/1,578.18 = 848.84/x
3. Step 3: Cross multiply
   1,143.50x = 1,578.18 × 848.84
4. Step 4: Simplify right side
   1,143.50x = 1,339,622.31
5. Step 5: Solve for x
   x = 1,339,622.31/1,143.50
6. Step 6: Final answer
   x = 1,171.51