Finding the Fourth Proportional to 1,734.40, 2,603.56 and 1,085.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,734.40 : 2,603.56 = 1,085.52 : x
2. Step 2: Convert to fraction form
   1,734.40/2,603.56 = 1,085.52/x
3. Step 3: Cross multiply
   1,734.40x = 2,603.56 × 1,085.52
4. Step 4: Simplify right side
   1,734.40x = 2,826,216.45
5. Step 5: Solve for x
   x = 2,826,216.45/1,734.40
6. Step 6: Final answer
   x = 1,629.51