Finding the Fourth Proportional to 2,255.50, 3,382.82 and 611.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,255.50 : 3,382.82 = 611.83 : x
2. Step 2: Convert to fraction form
   2,255.50/3,382.82 = 611.83/x
3. Step 3: Cross multiply
   2,255.50x = 3,382.82 × 611.83
4. Step 4: Simplify right side
   2,255.50x = 2,069,690.79
5. Step 5: Solve for x
   x = 2,069,690.79/2,255.50
6. Step 6: Final answer
   x = 917.62