Finding the Fourth Proportional to 1,308.29, 1,806.50 and 889.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308.29 : 1,806.50 = 889.52 : x
2. Step 2: Convert to fraction form
   1,308.29/1,806.50 = 889.52/x
3. Step 3: Cross multiply
   1,308.29x = 1,806.50 × 889.52
4. Step 4: Simplify right side
   1,308.29x = 1,606,911.07
5. Step 5: Solve for x
   x = 1,606,911.07/1,308.29
6. Step 6: Final answer
   x = 1,228.26