Finding the Fourth Proportional to 1,945.83, 2,919.96 and 1,080.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,945.83 : 2,919.96 = 1,080.75 : x
2. Step 2: Convert to fraction form
   1,945.83/2,919.96 = 1,080.75/x
3. Step 3: Cross multiply
   1,945.83x = 2,919.96 × 1,080.75
4. Step 4: Simplify right side
   1,945.83x = 3,155,746.77
5. Step 5: Solve for x
   x = 3,155,746.77/1,945.83
6. Step 6: Final answer
   x = 1,621.80