Finding the Fourth Proportional to 2,259.06, 3,117.80 and 1,264.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,259.06 : 3,117.80 = 1,264.72 : x
2. Step 2: Convert to fraction form
   2,259.06/3,117.80 = 1,264.72/x
3. Step 3: Cross multiply
   2,259.06x = 3,117.80 × 1,264.72
4. Step 4: Simplify right side
   2,259.06x = 3,943,144.02
5. Step 5: Solve for x
   x = 3,943,144.02/2,259.06
6. Step 6: Final answer
   x = 1,745.48