Finding the Fourth Proportional to 2,455.89, 3,389.75 and 1,659.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,455.89 : 3,389.75 = 1,659.45 : x
2. Step 2: Convert to fraction form
   2,455.89/3,389.75 = 1,659.45/x
3. Step 3: Cross multiply
   2,455.89x = 3,389.75 × 1,659.45
4. Step 4: Simplify right side
   2,455.89x = 5,625,112.34
5. Step 5: Solve for x
   x = 5,625,112.34/2,455.89
6. Step 6: Final answer
   x = 2,290.46