Finding the Fourth Proportional to 3,426.26, 5,137.64 and 1,085.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,426.26 : 5,137.64 = 1,085.50 : x
2. Step 2: Convert to fraction form
   3,426.26/5,137.64 = 1,085.50/x
3. Step 3: Cross multiply
   3,426.26x = 5,137.64 × 1,085.50
4. Step 4: Simplify right side
   3,426.26x = 5,576,877.10
5. Step 5: Solve for x
   x = 5,576,877.10/3,426.26
6. Step 6: Final answer
   x = 1,627.69