Finding the Fourth Proportional to 2,548.20, 3,516.42 and 1,429.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,548.20 : 3,516.42 = 1,429.20 : x
2. Step 2: Convert to fraction form
   2,548.20/3,516.42 = 1,429.20/x
3. Step 3: Cross multiply
   2,548.20x = 3,516.42 × 1,429.20
4. Step 4: Simplify right side
   2,548.20x = 5,025,667.46
5. Step 5: Solve for x
   x = 5,025,667.46/2,548.20
6. Step 6: Final answer
   x = 1,972.24