Finding the Fourth Proportional to 2,561.34, 3,843.50 and 1,080.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561.34 : 3,843.50 = 1,080.47 : x
2. Step 2: Convert to fraction form
   2,561.34/3,843.50 = 1,080.47/x
3. Step 3: Cross multiply
   2,561.34x = 3,843.50 × 1,080.47
4. Step 4: Simplify right side
   2,561.34x = 4,152,786.45
5. Step 5: Solve for x
   x = 4,152,786.45/2,561.34
6. Step 6: Final answer
   x = 1,621.33