Finding the Fourth Proportional to 2,612.67, 3,919.59 and 881.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.67 : 3,919.59 = 881.25 : x
2. Step 2: Convert to fraction form
   2,612.67/3,919.59 = 881.25/x
3. Step 3: Cross multiply
   2,612.67x = 3,919.59 × 881.25
4. Step 4: Simplify right side
   2,612.67x = 3,454,138.69
5. Step 5: Solve for x
   x = 3,454,138.69/2,612.67
6. Step 6: Final answer
   x = 1,322.07