Finding the Fourth Proportional to 1,076.31, 1,485.18 and 604.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076.31 : 1,485.18 = 604.23 : x
2. Step 2: Convert to fraction form
   1,076.31/1,485.18 = 604.23/x
3. Step 3: Cross multiply
   1,076.31x = 1,485.18 × 604.23
4. Step 4: Simplify right side
   1,076.31x = 897,390.31
5. Step 5: Solve for x
   x = 897,390.31/1,076.31
6. Step 6: Final answer
   x = 833.77