Finding the Fourth Proportional to 2,785.38, 3,835.72 and 2,607.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,785.38 : 3,835.72 = 2,607.30 : x
2. Step 2: Convert to fraction form
   2,785.38/3,835.72 = 2,607.30/x
3. Step 3: Cross multiply
   2,785.38x = 3,835.72 × 2,607.30
4. Step 4: Simplify right side
   2,785.38x = 10,000,866.85
5. Step 5: Solve for x
   x = 10,000,866.85/2,785.38
6. Step 6: Final answer
   x = 3,590.49