Finding the Fourth Proportional to 1,151.92, 1,588.89 and 709.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,151.92 : 1,588.89 = 709.39 : x
2. Step 2: Convert to fraction form
   1,151.92/1,588.89 = 709.39/x
3. Step 3: Cross multiply
   1,151.92x = 1,588.89 × 709.39
4. Step 4: Simplify right side
   1,151.92x = 1,127,142.68
5. Step 5: Solve for x
   x = 1,127,142.68/1,151.92
6. Step 6: Final answer
   x = 978.49