Finding the Fourth Proportional to 3,546.31, 5,320.05 and 1,080.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,546.31 : 5,320.05 = 1,080.52 : x
2. Step 2: Convert to fraction form
   3,546.31/5,320.05 = 1,080.52/x
3. Step 3: Cross multiply
   3,546.31x = 5,320.05 × 1,080.52
4. Step 4: Simplify right side
   3,546.31x = 5,748,420.43
5. Step 5: Solve for x
   x = 5,748,420.43/3,546.31
6. Step 6: Final answer
   x = 1,620.96