Finding the Fourth Proportional to 2,087.64, 3,131.98 and 626.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.64 : 3,131.98 = 626.82 : x
2. Step 2: Convert to fraction form
   2,087.64/3,131.98 = 626.82/x
3. Step 3: Cross multiply
   2,087.64x = 3,131.98 × 626.82
4. Step 4: Simplify right side
   2,087.64x = 1,963,187.70
5. Step 5: Solve for x
   x = 1,963,187.70/2,087.64
6. Step 6: Final answer
   x = 940.39