Finding the Fourth Proportional to 2,191.09, 3,280.29 and 1,704.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.09 : 3,280.29 = 1,704.55 : x
2. Step 2: Convert to fraction form
   2,191.09/3,280.29 = 1,704.55/x
3. Step 3: Cross multiply
   2,191.09x = 3,280.29 × 1,704.55
4. Step 4: Simplify right side
   2,191.09x = 5,591,418.32
5. Step 5: Solve for x
   x = 5,591,418.32/2,191.09
6. Step 6: Final answer
   x = 2,551.89