Finding the Fourth Proportional to 2,256.91, 3,382.93 and 1,085.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,256.91 : 3,382.93 = 1,085.25 : x
2. Step 2: Convert to fraction form
   2,256.91/3,382.93 = 1,085.25/x
3. Step 3: Cross multiply
   2,256.91x = 3,382.93 × 1,085.25
4. Step 4: Simplify right side
   2,256.91x = 3,671,324.78
5. Step 5: Solve for x
   x = 3,671,324.78/2,256.91
6. Step 6: Final answer
   x = 1,626.70