Finding the Fourth Proportional to 2,007.27, 3,010.15 and 690.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.27 : 3,010.15 = 690.64 : x
2. Step 2: Convert to fraction form
   2,007.27/3,010.15 = 690.64/x
3. Step 3: Cross multiply
   2,007.27x = 3,010.15 × 690.64
4. Step 4: Simplify right side
   2,007.27x = 2,078,930.00
5. Step 5: Solve for x
   x = 2,078,930.00/2,007.27
6. Step 6: Final answer
   x = 1,035.70