Finding the Fourth Proportional to 2,107.27, 2,906.86 and 1,310.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,107.27 : 2,906.86 = 1,310.72 : x
2. Step 2: Convert to fraction form
   2,107.27/2,906.86 = 1,310.72/x
3. Step 3: Cross multiply
   2,107.27x = 2,906.86 × 1,310.72
4. Step 4: Simplify right side
   2,107.27x = 3,810,072.99
5. Step 5: Solve for x
   x = 3,810,072.99/2,107.27
6. Step 6: Final answer
   x = 1,808.07