Finding the Fourth Proportional to 1,076.76, 1,485.88 and 604.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076.76 : 1,485.88 = 604.72 : x
2. Step 2: Convert to fraction form
   1,076.76/1,485.88 = 604.72/x
3. Step 3: Cross multiply
   1,076.76x = 1,485.88 × 604.72
4. Step 4: Simplify right side
   1,076.76x = 898,541.35
5. Step 5: Solve for x
   x = 898,541.35/1,076.76
6. Step 6: Final answer
   x = 834.49