Finding the Fourth Proportional to 2,826.86, 4,239.50 and 1,785.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,826.86 : 4,239.50 = 1,785.33 : x
2. Step 2: Convert to fraction form
   2,826.86/4,239.50 = 1,785.33/x
3. Step 3: Cross multiply
   2,826.86x = 4,239.50 × 1,785.33
4. Step 4: Simplify right side
   2,826.86x = 7,568,897.61
5. Step 5: Solve for x
   x = 7,568,897.61/2,826.86
6. Step 6: Final answer
   x = 2,677.50