Finding the Fourth Proportional to 1,076.72, 1,485.79 and 604.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076.72 : 1,485.79 = 604.55 : x
2. Step 2: Convert to fraction form
   1,076.72/1,485.79 = 604.55/x
3. Step 3: Cross multiply
   1,076.72x = 1,485.79 × 604.55
4. Step 4: Simplify right side
   1,076.72x = 898,236.55
5. Step 5: Solve for x
   x = 898,236.55/1,076.72
6. Step 6: Final answer
   x = 834.23