Finding the Fourth Proportional to 2,078.60, 3,100.80 and 1,929.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.60 : 3,100.80 = 1,929.43 : x
2. Step 2: Convert to fraction form
   2,078.60/3,100.80 = 1,929.43/x
3. Step 3: Cross multiply
   2,078.60x = 3,100.80 × 1,929.43
4. Step 4: Simplify right side
   2,078.60x = 5,982,787.66
5. Step 5: Solve for x
   x = 5,982,787.66/2,078.60
6. Step 6: Final answer
   x = 2,878.28