Finding the Fourth Proportional to 1,919.62, 2,648.82 and 1,080.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,919.62 : 2,648.82 = 1,080.29 : x
2. Step 2: Convert to fraction form
   1,919.62/2,648.82 = 1,080.29/x
3. Step 3: Cross multiply
   1,919.62x = 2,648.82 × 1,080.29
4. Step 4: Simplify right side
   1,919.62x = 2,861,493.76
5. Step 5: Solve for x
   x = 2,861,493.76/1,919.62
6. Step 6: Final answer
   x = 1,490.66