Finding the Fourth Proportional to 2,007.57, 2,770.40 and 1,168.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.57 : 2,770.40 = 1,168.61 : x
2. Step 2: Convert to fraction form
   2,007.57/2,770.40 = 1,168.61/x
3. Step 3: Cross multiply
   2,007.57x = 2,770.40 × 1,168.61
4. Step 4: Simplify right side
   2,007.57x = 3,237,497.45
5. Step 5: Solve for x
   x = 3,237,497.45/2,007.57
6. Step 6: Final answer
   x = 1,612.64