Finding the Fourth Proportional to 2,826.15, 4,238.51 and 1,265.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,826.15 : 4,238.51 = 1,265.28 : x
2. Step 2: Convert to fraction form
   2,826.15/4,238.51 = 1,265.28/x
3. Step 3: Cross multiply
   2,826.15x = 4,238.51 × 1,265.28
4. Step 4: Simplify right side
   2,826.15x = 5,362,901.93
5. Step 5: Solve for x
   x = 5,362,901.93/2,826.15
6. Step 6: Final answer
   x = 1,897.60