Finding the Fourth Proportional to 3,551.88, 5,326.47 and 1,085.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,551.88 : 5,326.47 = 1,085.94 : x
2. Step 2: Convert to fraction form
   3,551.88/5,326.47 = 1,085.94/x
3. Step 3: Cross multiply
   3,551.88x = 5,326.47 × 1,085.94
4. Step 4: Simplify right side
   3,551.88x = 5,784,226.83
5. Step 5: Solve for x
   x = 5,784,226.83/3,551.88
6. Step 6: Final answer
   x = 1,628.50