Finding the Fourth Proportional to 2,604.03, 3,906.45 and 872.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,604.03 : 3,906.45 = 872.25 : x
2. Step 2: Convert to fraction form
   2,604.03/3,906.45 = 872.25/x
3. Step 3: Cross multiply
   2,604.03x = 3,906.45 × 872.25
4. Step 4: Simplify right side
   2,604.03x = 3,407,401.01
5. Step 5: Solve for x
   x = 3,407,401.01/2,604.03
6. Step 6: Final answer
   x = 1,308.51