Finding the Fourth Proportional to 2,785.72, 3,845.79 and 1,900

Step by Step Solution

1. Step 1: Write the proportion equation
   2,785.72 : 3,845.79 = 1,900 : x
2. Step 2: Convert to fraction form
   2,785.72/3,845.79 = 1,900/x
3. Step 3: Cross multiply
   2,785.72x = 3,845.79 × 1,900
4. Step 4: Simplify right side
   2,785.72x = 7,307,001
5. Step 5: Solve for x
   x = 7,307,001/2,785.72
6. Step 6: Final answer
   x = 2,623.02