Finding the Fourth Proportional to 2,610.50, 3,915.74 and 662.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.50 : 3,915.74 = 662.72 : x
2. Step 2: Convert to fraction form
   2,610.50/3,915.74 = 662.72/x
3. Step 3: Cross multiply
   2,610.50x = 3,915.74 × 662.72
4. Step 4: Simplify right side
   2,610.50x = 2,595,021.29
5. Step 5: Solve for x
   x = 2,595,021.29/2,610.50
6. Step 6: Final answer
   x = 994.07