Finding the Fourth Proportional to 1,271.71, 1,906.79 and 655.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,271.71 : 1,906.79 = 655.59 : x
2. Step 2: Convert to fraction form
   1,271.71/1,906.79 = 655.59/x
3. Step 3: Cross multiply
   1,271.71x = 1,906.79 × 655.59
4. Step 4: Simplify right side
   1,271.71x = 1,250,067.95
5. Step 5: Solve for x
   x = 1,250,067.95/1,271.71
6. Step 6: Final answer
   x = 982.98