Finding the Fourth Proportional to 1,906.78, 2,837.33 and 1,900.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,906.78 : 2,837.33 = 1,900.30 : x
2. Step 2: Convert to fraction form
   1,906.78/2,837.33 = 1,900.30/x
3. Step 3: Cross multiply
   1,906.78x = 2,837.33 × 1,900.30
4. Step 4: Simplify right side
   1,906.78x = 5,391,778.20
5. Step 5: Solve for x
   x = 5,391,778.20/1,906.78
6. Step 6: Final answer
   x = 2,827.69