Finding the Fourth Proportional to 1,172.48, 1,756.69 and 709.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,172.48 : 1,756.69 = 709.16 : x
2. Step 2: Convert to fraction form
   1,172.48/1,756.69 = 709.16/x
3. Step 3: Cross multiply
   1,172.48x = 1,756.69 × 709.16
4. Step 4: Simplify right side
   1,172.48x = 1,245,763.72
5. Step 5: Solve for x
   x = 1,245,763.72/1,172.48
6. Step 6: Final answer
   x = 1,062.51