Finding the Fourth Proportional to 1,144.36, 1,578.57 and 702.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144.36 : 1,578.57 = 702.10 : x
2. Step 2: Convert to fraction form
   1,144.36/1,578.57 = 702.10/x
3. Step 3: Cross multiply
   1,144.36x = 1,578.57 × 702.10
4. Step 4: Simplify right side
   1,144.36x = 1,108,314.00
5. Step 5: Solve for x
   x = 1,108,314.00/1,144.36
6. Step 6: Final answer
   x = 968.50