Finding the Fourth Proportional to 1,082.49, 1,492.86 and 709.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,082.49 : 1,492.86 = 709.33 : x
2. Step 2: Convert to fraction form
   1,082.49/1,492.86 = 709.33/x
3. Step 3: Cross multiply
   1,082.49x = 1,492.86 × 709.33
4. Step 4: Simplify right side
   1,082.49x = 1,058,930.57
5. Step 5: Solve for x
   x = 1,058,930.57/1,082.49
6. Step 6: Final answer
   x = 978.24