Finding the Fourth Proportional to 1,906.52, 2,859.83 and 674.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,906.52 : 2,859.83 = 674.78 : x
2. Step 2: Convert to fraction form
   1,906.52/2,859.83 = 674.78/x
3. Step 3: Cross multiply
   1,906.52x = 2,859.83 × 674.78
4. Step 4: Simplify right side
   1,906.52x = 1,929,743.48
5. Step 5: Solve for x
   x = 1,929,743.48/1,906.52
6. Step 6: Final answer
   x = 1,012.18