Finding the Fourth Proportional to 1,027.47, 1,418.18 and 629.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,027.47 : 1,418.18 = 629.27 : x
2. Step 2: Convert to fraction form
   1,027.47/1,418.18 = 629.27/x
3. Step 3: Cross multiply
   1,027.47x = 1,418.18 × 629.27
4. Step 4: Simplify right side
   1,027.47x = 892,407.89
5. Step 5: Solve for x
   x = 892,407.89/1,027.47
6. Step 6: Final answer
   x = 868.55