Finding the Fourth Proportional to 2,830.86, 3,907.31 and 1,949.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,830.86 : 3,907.31 = 1,949.04 : x
2. Step 2: Convert to fraction form
   2,830.86/3,907.31 = 1,949.04/x
3. Step 3: Cross multiply
   2,830.86x = 3,907.31 × 1,949.04
4. Step 4: Simplify right side
   2,830.86x = 7,615,493.74
5. Step 5: Solve for x
   x = 7,615,493.74/2,830.86
6. Step 6: Final answer
   x = 2,690.17