Finding the Fourth Proportional to 1,350.47, 1,863.81 and 826.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,350.47 : 1,863.81 = 826.61 : x
2. Step 2: Convert to fraction form
   1,350.47/1,863.81 = 826.61/x
3. Step 3: Cross multiply
   1,350.47x = 1,863.81 × 826.61
4. Step 4: Simplify right side
   1,350.47x = 1,540,634.67
5. Step 5: Solve for x
   x = 1,540,634.67/1,350.47
6. Step 6: Final answer
   x = 1,140.81