Finding the Fourth Proportional to 2,548.81, 3,517.15 and 1,429.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,548.81 : 3,517.15 = 1,429.60 : x
2. Step 2: Convert to fraction form
   2,548.81/3,517.15 = 1,429.60/x
3. Step 3: Cross multiply
   2,548.81x = 3,517.15 × 1,429.60
4. Step 4: Simplify right side
   2,548.81x = 5,028,100.05
5. Step 5: Solve for x
   x = 5,028,100.05/2,548.81
6. Step 6: Final answer
   x = 1,972.72