Finding the Fourth Proportional to 3,551.25, 5,326.59 and 1,086.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,551.25 : 5,326.59 = 1,086.06 : x
2. Step 2: Convert to fraction form
   3,551.25/5,326.59 = 1,086.06/x
3. Step 3: Cross multiply
   3,551.25x = 5,326.59 × 1,086.06
4. Step 4: Simplify right side
   3,551.25x = 5,784,996.34
5. Step 5: Solve for x
   x = 5,784,996.34/3,551.25
6. Step 6: Final answer
   x = 1,629.00