Finding the Fourth Proportional to 2,087.94, 3,131.94 and 627.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.94 : 3,131.94 = 627.12 : x
2. Step 2: Convert to fraction form
   2,087.94/3,131.94 = 627.12/x
3. Step 3: Cross multiply
   2,087.94x = 3,131.94 × 627.12
4. Step 4: Simplify right side
   2,087.94x = 1,964,102.21
5. Step 5: Solve for x
   x = 1,964,102.21/2,087.94
6. Step 6: Final answer
   x = 940.69