Finding the Fourth Proportional to 1,284.69, 1,772.89 and 695.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,284.69 : 1,772.89 = 695.23 : x
2. Step 2: Convert to fraction form
   1,284.69/1,772.89 = 695.23/x
3. Step 3: Cross multiply
   1,284.69x = 1,772.89 × 695.23
4. Step 4: Simplify right side
   1,284.69x = 1,232,566.31
5. Step 5: Solve for x
   x = 1,232,566.31/1,284.69
6. Step 6: Final answer
   x = 959.43