Finding the Fourth Proportional to 2,007.04, 3,010.68 and 1,139.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.04 : 3,010.68 = 1,139.68 : x
2. Step 2: Convert to fraction form
   2,007.04/3,010.68 = 1,139.68/x
3. Step 3: Cross multiply
   2,007.04x = 3,010.68 × 1,139.68
4. Step 4: Simplify right side
   2,007.04x = 3,431,211.78
5. Step 5: Solve for x
   x = 3,431,211.78/2,007.04
6. Step 6: Final answer
   x = 1,709.59