Finding the Fourth Proportional to 2,785.50, 3,843.89 and 1,666.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,785.50 : 3,843.89 = 1,666.17 : x
2. Step 2: Convert to fraction form
   2,785.50/3,843.89 = 1,666.17/x
3. Step 3: Cross multiply
   2,785.50x = 3,843.89 × 1,666.17
4. Step 4: Simplify right side
   2,785.50x = 6,404,565.87
5. Step 5: Solve for x
   x = 6,404,565.87/2,785.50
6. Step 6: Final answer
   x = 2,299.25