Finding the Fourth Proportional to 1,906.76, 2,860.56 and 674.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,906.76 : 2,860.56 = 674.12 : x
2. Step 2: Convert to fraction form
   1,906.76/2,860.56 = 674.12/x
3. Step 3: Cross multiply
   1,906.76x = 2,860.56 × 674.12
4. Step 4: Simplify right side
   1,906.76x = 1,928,360.71
5. Step 5: Solve for x
   x = 1,928,360.71/1,906.76
6. Step 6: Final answer
   x = 1,011.33