Finding the Fourth Proportional to 2,785.86, 3,842.37 and 2,615.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,785.86 : 3,842.37 = 2,615.76 : x
2. Step 2: Convert to fraction form
   2,785.86/3,842.37 = 2,615.76/x
3. Step 3: Cross multiply
   2,785.86x = 3,842.37 × 2,615.76
4. Step 4: Simplify right side
   2,785.86x = 10,050,717.75
5. Step 5: Solve for x
   x = 10,050,717.75/2,785.86
6. Step 6: Final answer
   x = 3,607.76