Finding the Fourth Proportional to 2,513.92, 3,770.83 and 665.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,513.92 : 3,770.83 = 665.15 : x
2. Step 2: Convert to fraction form
   2,513.92/3,770.83 = 665.15/x
3. Step 3: Cross multiply
   2,513.92x = 3,770.83 × 665.15
4. Step 4: Simplify right side
   2,513.92x = 2,508,167.57
5. Step 5: Solve for x
   x = 2,508,167.57/2,513.92
6. Step 6: Final answer
   x = 997.71