Finding the Fourth Proportional to 2,662.05, 3,994.95 and 997.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,662.05 : 3,994.95 = 997.61 : x
2. Step 2: Convert to fraction form
   2,662.05/3,994.95 = 997.61/x
3. Step 3: Cross multiply
   2,662.05x = 3,994.95 × 997.61
4. Step 4: Simplify right side
   2,662.05x = 3,985,382.09
5. Step 5: Solve for x
   x = 3,985,382.09/2,662.05
6. Step 6: Final answer
   x = 1,497.11