Finding the Fourth Proportional to 3,547.31, 5,321.55 and 1,081.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,547.31 : 5,321.55 = 1,081.52 : x
2. Step 2: Convert to fraction form
   3,547.31/5,321.55 = 1,081.52/x
3. Step 3: Cross multiply
   3,547.31x = 5,321.55 × 1,081.52
4. Step 4: Simplify right side
   3,547.31x = 5,755,362.76
5. Step 5: Solve for x
   x = 5,755,362.76/3,547.31
6. Step 6: Final answer
   x = 1,622.46