Finding the Fourth Proportional to 2,641.34, 3,961.54 and 997.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,641.34 : 3,961.54 = 997.75 : x
2. Step 2: Convert to fraction form
   2,641.34/3,961.54 = 997.75/x
3. Step 3: Cross multiply
   2,641.34x = 3,961.54 × 997.75
4. Step 4: Simplify right side
   2,641.34x = 3,952,632.73
5. Step 5: Solve for x
   x = 3,952,632.73/2,641.34
6. Step 6: Final answer
   x = 1,496.45