Finding the Fourth Proportional to 2,710.12, 4,061.90 and 1,939

Step by Step Solution

1. Step 1: Write the proportion equation
   2,710.12 : 4,061.90 = 1,939 : x
2. Step 2: Convert to fraction form
   2,710.12/4,061.90 = 1,939/x
3. Step 3: Cross multiply
   2,710.12x = 4,061.90 × 1,939
4. Step 4: Simplify right side
   2,710.12x = 7,876,024.10
5. Step 5: Solve for x
   x = 7,876,024.10/2,710.12
6. Step 6: Final answer
   x = 2,906.15