Finding the Fourth Proportional to 1,150.96, 1,588.91 and 709.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.96 : 1,588.91 = 709.12 : x
2. Step 2: Convert to fraction form
   1,150.96/1,588.91 = 709.12/x
3. Step 3: Cross multiply
   1,150.96x = 1,588.91 × 709.12
4. Step 4: Simplify right side
   1,150.96x = 1,126,720.34
5. Step 5: Solve for x
   x = 1,126,720.34/1,150.96
6. Step 6: Final answer
   x = 978.94