Finding the Fourth Proportional to 1,551.32, 2,327.83 and 685.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,551.32 : 2,327.83 = 685.61 : x
2. Step 2: Convert to fraction form
   1,551.32/2,327.83 = 685.61/x
3. Step 3: Cross multiply
   1,551.32x = 2,327.83 × 685.61
4. Step 4: Simplify right side
   1,551.32x = 1,595,978.56
5. Step 5: Solve for x
   x = 1,595,978.56/1,551.32
6. Step 6: Final answer
   x = 1,028.79