Finding the Fourth Proportional to 1,028.42, 1,418.60 and 748.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,028.42 : 1,418.60 = 748.31 : x
2. Step 2: Convert to fraction form
   1,028.42/1,418.60 = 748.31/x
3. Step 3: Cross multiply
   1,028.42x = 1,418.60 × 748.31
4. Step 4: Simplify right side
   1,028.42x = 1,061,557.98
5. Step 5: Solve for x
   x = 1,061,557.98/1,028.42
6. Step 6: Final answer
   x = 1,032.23