Finding the Fourth Proportional to 2,549.59, 3,519.18 and 1,665.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,549.59 : 3,519.18 = 1,665.53 : x
2. Step 2: Convert to fraction form
   2,549.59/3,519.18 = 1,665.53/x
3. Step 3: Cross multiply
   2,549.59x = 3,519.18 × 1,665.53
4. Step 4: Simplify right side
   2,549.59x = 5,861,299.87
5. Step 5: Solve for x
   x = 5,861,299.87/2,549.59
6. Step 6: Final answer
   x = 2,298.92