Finding the Fourth Proportional to 3,546.55, 5,320.61 and 1,081.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,546.55 : 5,320.61 = 1,081.56 : x
2. Step 2: Convert to fraction form
   3,546.55/5,320.61 = 1,081.56/x
3. Step 3: Cross multiply
   3,546.55x = 5,320.61 × 1,081.56
4. Step 4: Simplify right side
   3,546.55x = 5,754,547.62
5. Step 5: Solve for x
   x = 5,754,547.62/3,546.55
6. Step 6: Final answer
   x = 1,622.58