Finding the Fourth Proportional to 2,775.86, 4,165.23 and 1,236.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,775.86 : 4,165.23 = 1,236.50 : x
2. Step 2: Convert to fraction form
   2,775.86/4,165.23 = 1,236.50/x
3. Step 3: Cross multiply
   2,775.86x = 4,165.23 × 1,236.50
4. Step 4: Simplify right side
   2,775.86x = 5,150,306.90
5. Step 5: Solve for x
   x = 5,150,306.90/2,775.86
6. Step 6: Final answer
   x = 1,855.39