Finding the Fourth Proportional to 1,065.15, 1,471.31 and 888.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,065.15 : 1,471.31 = 888.69 : x
2. Step 2: Convert to fraction form
   1,065.15/1,471.31 = 888.69/x
3. Step 3: Cross multiply
   1,065.15x = 1,471.31 × 888.69
4. Step 4: Simplify right side
   1,065.15x = 1,307,538.48
5. Step 5: Solve for x
   x = 1,307,538.48/1,065.15
6. Step 6: Final answer
   x = 1,227.56