Finding the Fourth Proportional to 2,633.34, 3,950.10 and 685.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,633.34 : 3,950.10 = 685.74 : x
2. Step 2: Convert to fraction form
   2,633.34/3,950.10 = 685.74/x
3. Step 3: Cross multiply
   2,633.34x = 3,950.10 × 685.74
4. Step 4: Simplify right side
   2,633.34x = 2,708,741.57
5. Step 5: Solve for x
   x = 2,708,741.57/2,633.34
6. Step 6: Final answer
   x = 1,028.63