Finding the Fourth Proportional to 3,389.31, 5,082.89 and 1,080.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,389.31 : 5,082.89 = 1,080.27 : x
2. Step 2: Convert to fraction form
   3,389.31/5,082.89 = 1,080.27/x
3. Step 3: Cross multiply
   3,389.31x = 5,082.89 × 1,080.27
4. Step 4: Simplify right side
   3,389.31x = 5,490,888.18
5. Step 5: Solve for x
   x = 5,490,888.18/3,389.31
6. Step 6: Final answer
   x = 1,620.06