Finding the Fourth Proportional to 2,505, 3,759.72 and 1,335.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,505 : 3,759.72 = 1,335.78 : x
2. Step 2: Convert to fraction form
   2,505/3,759.72 = 1,335.78/x
3. Step 3: Cross multiply
   2,505x = 3,759.72 × 1,335.78
4. Step 4: Simplify right side
   2,505x = 5,022,158.78
5. Step 5: Solve for x
   x = 5,022,158.78/2,505
6. Step 6: Final answer
   x = 2,004.85