Finding the Fourth Proportional to 2,548.28, 3,518.16 and 1,665.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,548.28 : 3,518.16 = 1,665.56 : x
2. Step 2: Convert to fraction form
   2,548.28/3,518.16 = 1,665.56/x
3. Step 3: Cross multiply
   2,548.28x = 3,518.16 × 1,665.56
4. Step 4: Simplify right side
   2,548.28x = 5,859,706.57
5. Step 5: Solve for x
   x = 5,859,706.57/2,548.28
6. Step 6: Final answer
   x = 2,299.48