Finding the Fourth Proportional to 3,425.76, 5,136.89 and 1,085.00

Step by Step Solution

1. Step 1: Write the proportion equation
   3,425.76 : 5,136.89 = 1,085.00 : x
2. Step 2: Convert to fraction form
   3,425.76/5,136.89 = 1,085.00/x
3. Step 3: Cross multiply
   3,425.76x = 5,136.89 × 1,085.00
4. Step 4: Simplify right side
   3,425.76x = 5,573,494.54
5. Step 5: Solve for x
   x = 5,573,494.54/3,425.76
6. Step 6: Final answer
   x = 1,626.94