Finding the Fourth Proportional to 1,904.24, 2,854.41 and 1,080.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,904.24 : 2,854.41 = 1,080.78 : x
2. Step 2: Convert to fraction form
   1,904.24/2,854.41 = 1,080.78/x
3. Step 3: Cross multiply
   1,904.24x = 2,854.41 × 1,080.78
4. Step 4: Simplify right side
   1,904.24x = 3,084,983.60
5. Step 5: Solve for x
   x = 3,084,983.60/1,904.24
6. Step 6: Final answer
   x = 1,620.06