Finding the Fourth Proportional to 2,007.40, 2,770.17 and 1,168.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.40 : 2,770.17 = 1,168.05 : x
2. Step 2: Convert to fraction form
   2,007.40/2,770.17 = 1,168.05/x
3. Step 3: Cross multiply
   2,007.40x = 2,770.17 × 1,168.05
4. Step 4: Simplify right side
   2,007.40x = 3,235,697.07
5. Step 5: Solve for x
   x = 3,235,697.07/2,007.40
6. Step 6: Final answer
   x = 1,611.88