Finding the Fourth Proportional to 1,076.90, 1,486.04 and 604.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076.90 : 1,486.04 = 604.72 : x
2. Step 2: Convert to fraction form
   1,076.90/1,486.04 = 604.72/x
3. Step 3: Cross multiply
   1,076.90x = 1,486.04 × 604.72
4. Step 4: Simplify right side
   1,076.90x = 898,636.94
5. Step 5: Solve for x
   x = 898,636.94/1,076.90
6. Step 6: Final answer
   x = 834.47