Finding the Fourth Proportional to 1,273.32, 1,908.86 and 656.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,273.32 : 1,908.86 = 656.71 : x
2. Step 2: Convert to fraction form
   1,273.32/1,908.86 = 656.71/x
3. Step 3: Cross multiply
   1,273.32x = 1,908.86 × 656.71
4. Step 4: Simplify right side
   1,273.32x = 1,253,567.45
5. Step 5: Solve for x
   x = 1,253,567.45/1,273.32
6. Step 6: Final answer
   x = 984.49