Finding the Fourth Proportional to 2,561.06, 3,843.08 and 1,080.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561.06 : 3,843.08 = 1,080.19 : x
2. Step 2: Convert to fraction form
   2,561.06/3,843.08 = 1,080.19/x
3. Step 3: Cross multiply
   2,561.06x = 3,843.08 × 1,080.19
4. Step 4: Simplify right side
   2,561.06x = 4,151,256.59
5. Step 5: Solve for x
   x = 4,151,256.59/2,561.06
6. Step 6: Final answer
   x = 1,620.91