Finding the Fourth Proportional to 3,551.33, 5,327.59 and 1,085.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,551.33 : 5,327.59 = 1,085.57 : x
2. Step 2: Convert to fraction form
   3,551.33/5,327.59 = 1,085.57/x
3. Step 3: Cross multiply
   3,551.33x = 5,327.59 × 1,085.57
4. Step 4: Simplify right side
   3,551.33x = 5,783,490.07
5. Step 5: Solve for x
   x = 5,783,490.07/3,551.33
6. Step 6: Final answer
   x = 1,628.54