Finding the Fourth Proportional to 1,734.95, 2,603.55 and 1,086.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,734.95 : 2,603.55 = 1,086.05 : x
2. Step 2: Convert to fraction form
   1,734.95/2,603.55 = 1,086.05/x
3. Step 3: Cross multiply
   1,734.95x = 2,603.55 × 1,086.05
4. Step 4: Simplify right side
   1,734.95x = 2,827,585.48
5. Step 5: Solve for x
   x = 2,827,585.48/1,734.95
6. Step 6: Final answer
   x = 1,629.78