Finding the Fourth Proportional to 2,106.82, 3,160.85 and 626.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.82 : 3,160.85 = 626.09 : x
2. Step 2: Convert to fraction form
   2,106.82/3,160.85 = 626.09/x
3. Step 3: Cross multiply
   2,106.82x = 3,160.85 × 626.09
4. Step 4: Simplify right side
   2,106.82x = 1,978,972.25
5. Step 5: Solve for x
   x = 1,978,972.25/2,106.82
6. Step 6: Final answer
   x = 939.32