Finding the Fourth Proportional to 2,259.08, 3,116.82 and 1,264.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,259.08 : 3,116.82 = 1,264.20 : x
2. Step 2: Convert to fraction form
   2,259.08/3,116.82 = 1,264.20/x
3. Step 3: Cross multiply
   2,259.08x = 3,116.82 × 1,264.20
4. Step 4: Simplify right side
   2,259.08x = 3,940,283.84
5. Step 5: Solve for x
   x = 3,940,283.84/2,259.08
6. Step 6: Final answer
   x = 1,744.20