Finding the Fourth Proportional to 1,669.16, 2,505.25 and 889.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,669.16 : 2,505.25 = 889.82 : x
2. Step 2: Convert to fraction form
   1,669.16/2,505.25 = 889.82/x
3. Step 3: Cross multiply
   1,669.16x = 2,505.25 × 889.82
4. Step 4: Simplify right side
   1,669.16x = 2,229,209.03
5. Step 5: Solve for x
   x = 2,229,209.03/1,669.16
6. Step 6: Final answer
   x = 1,335.53