Finding the Fourth Proportional to 2,104.80, 2,906.18 and 1,359.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,104.80 : 2,906.18 = 1,359.20 : x
2. Step 2: Convert to fraction form
   2,104.80/2,906.18 = 1,359.20/x
3. Step 3: Cross multiply
   2,104.80x = 2,906.18 × 1,359.20
4. Step 4: Simplify right side
   2,104.80x = 3,950,058.53
5. Step 5: Solve for x
   x = 3,950,058.53/2,104.80
6. Step 6: Final answer
   x = 1,876.69