Finding the Fourth Proportional to 1,814.69, 2,486.83 and 1,639.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,814.69 : 2,486.83 = 1,639.73 : x
2. Step 2: Convert to fraction form
   1,814.69/2,486.83 = 1,639.73/x
3. Step 3: Cross multiply
   1,814.69x = 2,486.83 × 1,639.73
4. Step 4: Simplify right side
   1,814.69x = 4,077,729.76
5. Step 5: Solve for x
   x = 4,077,729.76/1,814.69
6. Step 6: Final answer
   x = 2,247.07