Finding the Fourth Proportional to 1,868.47, 2,578.42 and 1,029.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,868.47 : 2,578.42 = 1,029.18 : x
2. Step 2: Convert to fraction form
   1,868.47/2,578.42 = 1,029.18/x
3. Step 3: Cross multiply
   1,868.47x = 2,578.42 × 1,029.18
4. Step 4: Simplify right side
   1,868.47x = 2,653,658.30
5. Step 5: Solve for x
   x = 2,653,658.30/1,868.47
6. Step 6: Final answer
   x = 1,420.23