Finding the Fourth Proportional to 1,286.83, 1,775.82 and 697.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,286.83 : 1,775.82 = 697.37 : x
2. Step 2: Convert to fraction form
   1,286.83/1,775.82 = 697.37/x
3. Step 3: Cross multiply
   1,286.83x = 1,775.82 × 697.37
4. Step 4: Simplify right side
   1,286.83x = 1,238,392.10
5. Step 5: Solve for x
   x = 1,238,392.10/1,286.83
6. Step 6: Final answer
   x = 962.36