Finding the Fourth Proportional to 1,151.17, 1,588.73 and 709.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,151.17 : 1,588.73 = 709.33 : x
2. Step 2: Convert to fraction form
   1,151.17/1,588.73 = 709.33/x
3. Step 3: Cross multiply
   1,151.17x = 1,588.73 × 709.33
4. Step 4: Simplify right side
   1,151.17x = 1,126,933.85
5. Step 5: Solve for x
   x = 1,126,933.85/1,151.17
6. Step 6: Final answer
   x = 978.95