Finding the Fourth Proportional to 1,143.30, 1,578.06 and 701.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,143.30 : 1,578.06 = 701.38 : x
2. Step 2: Convert to fraction form
   1,143.30/1,578.06 = 701.38/x
3. Step 3: Cross multiply
   1,143.30x = 1,578.06 × 701.38
4. Step 4: Simplify right side
   1,143.30x = 1,106,819.72
5. Step 5: Solve for x
   x = 1,106,819.72/1,143.30
6. Step 6: Final answer
   x = 968.09