Finding the Fourth Proportional to 2,054.88, 3,080.16 and 1,080.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,054.88 : 3,080.16 = 1,080.72 : x
2. Step 2: Convert to fraction form
   2,054.88/3,080.16 = 1,080.72/x
3. Step 3: Cross multiply
   2,054.88x = 3,080.16 × 1,080.72
4. Step 4: Simplify right side
   2,054.88x = 3,328,790.52
5. Step 5: Solve for x
   x = 3,328,790.52/2,054.88
6. Step 6: Final answer
   x = 1,619.94