Finding the Fourth Proportional to 2,288.52, 3,429.56 and 1,085.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.52 : 3,429.56 = 1,085.11 : x
2. Step 2: Convert to fraction form
   2,288.52/3,429.56 = 1,085.11/x
3. Step 3: Cross multiply
   2,288.52x = 3,429.56 × 1,085.11
4. Step 4: Simplify right side
   2,288.52x = 3,721,443.99
5. Step 5: Solve for x
   x = 3,721,443.99/2,288.52
6. Step 6: Final answer
   x = 1,626.14