Finding the Fourth Proportional to 2,179.09, 3,264.31 and 1,407.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,179.09 : 3,264.31 = 1,407.25 : x
2. Step 2: Convert to fraction form
   2,179.09/3,264.31 = 1,407.25/x
3. Step 3: Cross multiply
   2,179.09x = 3,264.31 × 1,407.25
4. Step 4: Simplify right side
   2,179.09x = 4,593,700.25
5. Step 5: Solve for x
   x = 4,593,700.25/2,179.09
6. Step 6: Final answer
   x = 2,108.08