Finding the Fourth Proportional to 1,879.77, 2,814.42 and 1,222.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,879.77 : 2,814.42 = 1,222.38 : x
2. Step 2: Convert to fraction form
   1,879.77/2,814.42 = 1,222.38/x
3. Step 3: Cross multiply
   1,879.77x = 2,814.42 × 1,222.38
4. Step 4: Simplify right side
   1,879.77x = 3,440,290.72
5. Step 5: Solve for x
   x = 3,440,290.72/1,879.77
6. Step 6: Final answer
   x = 1,830.17