Finding the Fourth Proportional to 1,919.10, 2,648.28 and 1,079.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,919.10 : 2,648.28 = 1,079.82 : x
2. Step 2: Convert to fraction form
   1,919.10/2,648.28 = 1,079.82/x
3. Step 3: Cross multiply
   1,919.10x = 2,648.28 × 1,079.82
4. Step 4: Simplify right side
   1,919.10x = 2,859,665.71
5. Step 5: Solve for x
   x = 2,859,665.71/1,919.10
6. Step 6: Final answer
   x = 1,490.11