Finding the Fourth Proportional to 2,008.50, 3,013.10 and 691.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,008.50 : 3,013.10 = 691.93 : x
2. Step 2: Convert to fraction form
   2,008.50/3,013.10 = 691.93/x
3. Step 3: Cross multiply
   2,008.50x = 3,013.10 × 691.93
4. Step 4: Simplify right side
   2,008.50x = 2,084,854.28
5. Step 5: Solve for x
   x = 2,084,854.28/2,008.50
6. Step 6: Final answer
   x = 1,038.02