Finding the Fourth Proportional to 1,175.34, 1,622.07 and 709.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,175.34 : 1,622.07 = 709.50 : x
2. Step 2: Convert to fraction form
   1,175.34/1,622.07 = 709.50/x
3. Step 3: Cross multiply
   1,175.34x = 1,622.07 × 709.50
4. Step 4: Simplify right side
   1,175.34x = 1,150,858.67
5. Step 5: Solve for x
   x = 1,150,858.67/1,175.34
6. Step 6: Final answer
   x = 979.17