Finding the Fourth Proportional to 2,185.22, 3,279.46 and 1,259.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.22 : 3,279.46 = 1,259.54 : x
2. Step 2: Convert to fraction form
   2,185.22/3,279.46 = 1,259.54/x
3. Step 3: Cross multiply
   2,185.22x = 3,279.46 × 1,259.54
4. Step 4: Simplify right side
   2,185.22x = 4,130,618.93
5. Step 5: Solve for x
   x = 4,130,618.93/2,185.22
6. Step 6: Final answer
   x = 1,890.25