Finding the Fourth Proportional to 1,411.69, 1,947.22 and 886.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.69 : 1,947.22 = 886.81 : x
2. Step 2: Convert to fraction form
   1,411.69/1,947.22 = 886.81/x
3. Step 3: Cross multiply
   1,411.69x = 1,947.22 × 886.81
4. Step 4: Simplify right side
   1,411.69x = 1,726,814.17
5. Step 5: Solve for x
   x = 1,726,814.17/1,411.69
6. Step 6: Final answer
   x = 1,223.22