Finding the Fourth Proportional to 1,906.84, 2,857.86 and 1,800.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,906.84 : 2,857.86 = 1,800.37 : x
2. Step 2: Convert to fraction form
   1,906.84/2,857.86 = 1,800.37/x
3. Step 3: Cross multiply
   1,906.84x = 2,857.86 × 1,800.37
4. Step 4: Simplify right side
   1,906.84x = 5,145,205.41
5. Step 5: Solve for x
   x = 5,145,205.41/1,906.84
6. Step 6: Final answer
   x = 2,698.29