Finding the Fourth Proportional to 2,107.10, 3,160.72 and 626.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,107.10 : 3,160.72 = 626.32 : x
2. Step 2: Convert to fraction form
   2,107.10/3,160.72 = 626.32/x
3. Step 3: Cross multiply
   2,107.10x = 3,160.72 × 626.32
4. Step 4: Simplify right side
   2,107.10x = 1,979,622.15
5. Step 5: Solve for x
   x = 1,979,622.15/2,107.10
6. Step 6: Final answer
   x = 939.50