Finding the Fourth Proportional to 1,708.56, 2,559.51 and 1,081.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,708.56 : 2,559.51 = 1,081.94 : x
2. Step 2: Convert to fraction form
   1,708.56/2,559.51 = 1,081.94/x
3. Step 3: Cross multiply
   1,708.56x = 2,559.51 × 1,081.94
4. Step 4: Simplify right side
   1,708.56x = 2,769,223.45
5. Step 5: Solve for x
   x = 2,769,223.45/1,708.56
6. Step 6: Final answer
   x = 1,620.79