Finding the Fourth Proportional to 1,168.05, 1,611.90 and 696.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,168.05 : 1,611.90 = 696.18 : x
2. Step 2: Convert to fraction form
   1,168.05/1,611.90 = 696.18/x
3. Step 3: Cross multiply
   1,168.05x = 1,611.90 × 696.18
4. Step 4: Simplify right side
   1,168.05x = 1,122,172.54
5. Step 5: Solve for x
   x = 1,122,172.54/1,168.05
6. Step 6: Final answer
   x = 960.72