Finding the Fourth Proportional to 1,856.69, 2,798.09 and 1,671.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,856.69 : 2,798.09 = 1,671.83 : x
2. Step 2: Convert to fraction form
   1,856.69/2,798.09 = 1,671.83/x
3. Step 3: Cross multiply
   1,856.69x = 2,798.09 × 1,671.83
4. Step 4: Simplify right side
   1,856.69x = 4,677,908.46
5. Step 5: Solve for x
   x = 4,677,908.46/1,856.69
6. Step 6: Final answer
   x = 2,519.49