Finding the Fourth Proportional to 1,076.45, 1,485.50 and 604.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076.45 : 1,485.50 = 604.35 : x
2. Step 2: Convert to fraction form
   1,076.45/1,485.50 = 604.35/x
3. Step 3: Cross multiply
   1,076.45x = 1,485.50 × 604.35
4. Step 4: Simplify right side
   1,076.45x = 897,758.90
5. Step 5: Solve for x
   x = 897,758.90/1,076.45
6. Step 6: Final answer
   x = 834.00