Finding the Fourth Proportional to 2,081.30, 3,127.41 and 1,939.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.30 : 3,127.41 = 1,939.14 : x
2. Step 2: Convert to fraction form
   2,081.30/3,127.41 = 1,939.14/x
3. Step 3: Cross multiply
   2,081.30x = 3,127.41 × 1,939.14
4. Step 4: Simplify right side
   2,081.30x = 6,064,485.83
5. Step 5: Solve for x
   x = 6,064,485.83/2,081.30
6. Step 6: Final answer
   x = 2,913.80