Finding the Fourth Proportional to 997.69, 1,498.69 and 843.92

Step by Step Solution

1. Step 1: Write the proportion equation
   997.69 : 1,498.69 = 843.92 : x
2. Step 2: Convert to fraction form
   997.69/1,498.69 = 843.92/x
3. Step 3: Cross multiply
   997.69x = 1,498.69 × 843.92
4. Step 4: Simplify right side
   997.69x = 1,264,774.46
5. Step 5: Solve for x
   x = 1,264,774.46/997.69
6. Step 6: Final answer
   x = 1,267.70