Finding the Fourth Proportional to 1,410.77, 2,112.89 and 889.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,410.77 : 2,112.89 = 889.25 : x
2. Step 2: Convert to fraction form
   1,410.77/2,112.89 = 889.25/x
3. Step 3: Cross multiply
   1,410.77x = 2,112.89 × 889.25
4. Step 4: Simplify right side
   1,410.77x = 1,878,872.42
5. Step 5: Solve for x
   x = 1,878,872.42/1,410.77
6. Step 6: Final answer
   x = 1,331.80