Finding the Fourth Proportional to 2,026.56, 3,039.30 and 872.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,026.56 : 3,039.30 = 872.04 : x
2. Step 2: Convert to fraction form
   2,026.56/3,039.30 = 872.04/x
3. Step 3: Cross multiply
   2,026.56x = 3,039.30 × 872.04
4. Step 4: Simplify right side
   2,026.56x = 2,650,391.17
5. Step 5: Solve for x
   x = 2,650,391.17/2,026.56
6. Step 6: Final answer
   x = 1,307.83