Finding the Fourth Proportional to 2,928.02, 4,393.76 and 1,080.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,928.02 : 4,393.76 = 1,080.42 : x
2. Step 2: Convert to fraction form
   2,928.02/4,393.76 = 1,080.42/x
3. Step 3: Cross multiply
   2,928.02x = 4,393.76 × 1,080.42
4. Step 4: Simplify right side
   2,928.02x = 4,747,100.78
5. Step 5: Solve for x
   x = 4,747,100.78/2,928.02
6. Step 6: Final answer
   x = 1,621.27