Finding the Fourth Proportional to 1,064.15, 1,469.93 and 887.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,064.15 : 1,469.93 = 887.69 : x
2. Step 2: Convert to fraction form
   1,064.15/1,469.93 = 887.69/x
3. Step 3: Cross multiply
   1,064.15x = 1,469.93 × 887.69
4. Step 4: Simplify right side
   1,064.15x = 1,304,842.16
5. Step 5: Solve for x
   x = 1,304,842.16/1,064.15
6. Step 6: Final answer
   x = 1,226.18