Finding the Fourth Proportional to 1,028.10, 1,418.89 and 655.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,028.10 : 1,418.89 = 655.42 : x
2. Step 2: Convert to fraction form
   1,028.10/1,418.89 = 655.42/x
3. Step 3: Cross multiply
   1,028.10x = 1,418.89 × 655.42
4. Step 4: Simplify right side
   1,028.10x = 929,968.88
5. Step 5: Solve for x
   x = 929,968.88/1,028.10
6. Step 6: Final answer
   x = 904.55