Finding the Fourth Proportional to 2,513.69, 3,770.60 and 664.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,513.69 : 3,770.60 = 664.96 : x
2. Step 2: Convert to fraction form
   2,513.69/3,770.60 = 664.96/x
3. Step 3: Cross multiply
   2,513.69x = 3,770.60 × 664.96
4. Step 4: Simplify right side
   2,513.69x = 2,507,298.18
5. Step 5: Solve for x
   x = 2,507,298.18/2,513.69
6. Step 6: Final answer
   x = 997.46