Finding the Fourth Proportional to 2,641.72, 3,961.80 and 997.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,641.72 : 3,961.80 = 997.04 : x
2. Step 2: Convert to fraction form
   2,641.72/3,961.80 = 997.04/x
3. Step 3: Cross multiply
   2,641.72x = 3,961.80 × 997.04
4. Step 4: Simplify right side
   2,641.72x = 3,950,073.07
5. Step 5: Solve for x
   x = 3,950,073.07/2,641.72
6. Step 6: Final answer
   x = 1,495.27