Finding the Fourth Proportional to 2,092.83, 3,139.85 and 997.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,092.83 : 3,139.85 = 997.21 : x
2. Step 2: Convert to fraction form
   2,092.83/3,139.85 = 997.21/x
3. Step 3: Cross multiply
   2,092.83x = 3,139.85 × 997.21
4. Step 4: Simplify right side
   2,092.83x = 3,131,089.82
5. Step 5: Solve for x
   x = 3,131,089.82/2,092.83
6. Step 6: Final answer
   x = 1,496.10