Finding the Fourth Proportional to 2,127.90, 2,934.03 and 1,949.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,127.90 : 2,934.03 = 1,949.31 : x
2. Step 2: Convert to fraction form
   2,127.90/2,934.03 = 1,949.31/x
3. Step 3: Cross multiply
   2,127.90x = 2,934.03 × 1,949.31
4. Step 4: Simplify right side
   2,127.90x = 5,719,334.02
5. Step 5: Solve for x
   x = 5,719,334.02/2,127.90
6. Step 6: Final answer
   x = 2,687.78