Finding the Fourth Proportional to 1,418.78, 1,945.71 and 1,359.66

Step by Step Solution

1. Step 1: Write the proportion equation
   1,418.78 : 1,945.71 = 1,359.66 : x
2. Step 2: Convert to fraction form
   1,418.78/1,945.71 = 1,359.66/x
3. Step 3: Cross multiply
   1,418.78x = 1,945.71 × 1,359.66
4. Step 4: Simplify right side
   1,418.78x = 2,645,504.06
5. Step 5: Solve for x
   x = 2,645,504.06/1,418.78
6. Step 6: Final answer
   x = 1,864.63