Finding the Fourth Proportional to 3,546.82, 5,320.46 and 1,081.65

Step by Step Solution

1. Step 1: Write the proportion equation
   3,546.82 : 5,320.46 = 1,081.65 : x
2. Step 2: Convert to fraction form
   3,546.82/5,320.46 = 1,081.65/x
3. Step 3: Cross multiply
   3,546.82x = 5,320.46 × 1,081.65
4. Step 4: Simplify right side
   3,546.82x = 5,754,875.56
5. Step 5: Solve for x
   x = 5,754,875.56/3,546.82
6. Step 6: Final answer
   x = 1,622.55