Finding the Fourth Proportional to 1,919.37, 2,648.82 and 1,080.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,919.37 : 2,648.82 = 1,080.07 : x
2. Step 2: Convert to fraction form
   1,919.37/2,648.82 = 1,080.07/x
3. Step 3: Cross multiply
   1,919.37x = 2,648.82 × 1,080.07
4. Step 4: Simplify right side
   1,919.37x = 2,860,908.45
5. Step 5: Solve for x
   x = 2,860,908.45/1,919.37
6. Step 6: Final answer
   x = 1,490.54