Finding the Fourth Proportional to 2,548.05, 3,515.67 and 1,429.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,548.05 : 3,515.67 = 1,429.02 : x
2. Step 2: Convert to fraction form
   2,548.05/3,515.67 = 1,429.02/x
3. Step 3: Cross multiply
   2,548.05x = 3,515.67 × 1,429.02
4. Step 4: Simplify right side
   2,548.05x = 5,023,962.74
5. Step 5: Solve for x
   x = 5,023,962.74/2,548.05
6. Step 6: Final answer
   x = 1,971.69