Finding the Fourth Proportional to 1,144.75, 1,579.69 and 702.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144.75 : 1,579.69 = 702.56 : x
2. Step 2: Convert to fraction form
   1,144.75/1,579.69 = 702.56/x
3. Step 3: Cross multiply
   1,144.75x = 1,579.69 × 702.56
4. Step 4: Simplify right side
   1,144.75x = 1,109,827.01
5. Step 5: Solve for x
   x = 1,109,827.01/1,144.75
6. Step 6: Final answer
   x = 969.49