Finding the Fourth Proportional to 1,172.29, 1,617.50 and 700.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,172.29 : 1,617.50 = 700.10 : x
2. Step 2: Convert to fraction form
   1,172.29/1,617.50 = 700.10/x
3. Step 3: Cross multiply
   1,172.29x = 1,617.50 × 700.10
4. Step 4: Simplify right side
   1,172.29x = 1,132,406.23
5. Step 5: Solve for x
   x = 1,132,406.23/1,172.29
6. Step 6: Final answer
   x = 965.98