Finding the Fourth Proportional to 3,997.33, 5,519.15 and 2,505.85

Step by Step Solution

1. Step 1: Write the proportion equation
   3,997.33 : 5,519.15 = 2,505.85 : x
2. Step 2: Convert to fraction form
   3,997.33/5,519.15 = 2,505.85/x
3. Step 3: Cross multiply
   3,997.33x = 5,519.15 × 2,505.85
4. Step 4: Simplify right side
   3,997.33x = 13,830,149.50
5. Step 5: Solve for x
   x = 13,830,149.50/3,997.33
6. Step 6: Final answer
   x = 3,459.85