Finding the Fourth Proportional to 1,028.42, 1,418.34 and 654.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,028.42 : 1,418.34 = 654.98 : x
2. Step 2: Convert to fraction form
   1,028.42/1,418.34 = 654.98/x
3. Step 3: Cross multiply
   1,028.42x = 1,418.34 × 654.98
4. Step 4: Simplify right side
   1,028.42x = 928,984.33
5. Step 5: Solve for x
   x = 928,984.33/1,028.42
6. Step 6: Final answer
   x = 903.31