Finding the Fourth Proportional to 2,043.06, 3,064.72 and 872.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,043.06 : 3,064.72 = 872.40 : x
2. Step 2: Convert to fraction form
   2,043.06/3,064.72 = 872.40/x
3. Step 3: Cross multiply
   2,043.06x = 3,064.72 × 872.40
4. Step 4: Simplify right side
   2,043.06x = 2,673,661.73
5. Step 5: Solve for x
   x = 2,673,661.73/2,043.06
6. Step 6: Final answer
   x = 1,308.66