Finding the Fourth Proportional to 2,165.78, 3,250.42 and 997.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,165.78 : 3,250.42 = 997.08 : x
2. Step 2: Convert to fraction form
   2,165.78/3,250.42 = 997.08/x
3. Step 3: Cross multiply
   2,165.78x = 3,250.42 × 997.08
4. Step 4: Simplify right side
   2,165.78x = 3,240,928.77
5. Step 5: Solve for x
   x = 3,240,928.77/2,165.78
6. Step 6: Final answer
   x = 1,496.43