Finding the Fourth Proportional to 1,419.72, 1,960.17 and 888.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,419.72 : 1,960.17 = 888.81 : x
2. Step 2: Convert to fraction form
   1,419.72/1,960.17 = 888.81/x
3. Step 3: Cross multiply
   1,419.72x = 1,960.17 × 888.81
4. Step 4: Simplify right side
   1,419.72x = 1,742,218.70
5. Step 5: Solve for x
   x = 1,742,218.70/1,419.72
6. Step 6: Final answer
   x = 1,227.16