Finding the Fourth Proportional to 1,362.11, 1,878.71 and 889.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,362.11 : 1,878.71 = 889.25 : x
2. Step 2: Convert to fraction form
   1,362.11/1,878.71 = 889.25/x
3. Step 3: Cross multiply
   1,362.11x = 1,878.71 × 889.25
4. Step 4: Simplify right side
   1,362.11x = 1,670,629.03
5. Step 5: Solve for x
   x = 1,670,629.03/1,362.11
6. Step 6: Final answer
   x = 1,226.51