Finding the Fourth Proportional to 1,371.45, 1,892.83 and 1,078.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,371.45 : 1,892.83 = 1,078.95 : x
2. Step 2: Convert to fraction form
   1,371.45/1,892.83 = 1,078.95/x
3. Step 3: Cross multiply
   1,371.45x = 1,892.83 × 1,078.95
4. Step 4: Simplify right side
   1,371.45x = 2,042,268.93
5. Step 5: Solve for x
   x = 2,042,268.93/1,371.45
6. Step 6: Final answer
   x = 1,489.13