Finding the Fourth Proportional to 2,007.93, 3,010.71 and 691.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.93 : 3,010.71 = 691.23 : x
2. Step 2: Convert to fraction form
   2,007.93/3,010.71 = 691.23/x
3. Step 3: Cross multiply
   2,007.93x = 3,010.71 × 691.23
4. Step 4: Simplify right side
   2,007.93x = 2,081,093.07
5. Step 5: Solve for x
   x = 2,081,093.07/2,007.93
6. Step 6: Final answer
   x = 1,036.44