Finding the Fourth Proportional to 1,419.98, 1,959.18 and 889.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,419.98 : 1,959.18 = 889.40 : x
2. Step 2: Convert to fraction form
   1,419.98/1,959.18 = 889.40/x
3. Step 3: Cross multiply
   1,419.98x = 1,959.18 × 889.40
4. Step 4: Simplify right side
   1,419.98x = 1,742,494.69
5. Step 5: Solve for x
   x = 1,742,494.69/1,419.98
6. Step 6: Final answer
   x = 1,227.13