Finding the Fourth Proportional to 1,281.34, 1,768.83 and 966.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,281.34 : 1,768.83 = 966.72 : x
2. Step 2: Convert to fraction form
   1,281.34/1,768.83 = 966.72/x
3. Step 3: Cross multiply
   1,281.34x = 1,768.83 × 966.72
4. Step 4: Simplify right side
   1,281.34x = 1,709,963.34
5. Step 5: Solve for x
   x = 1,709,963.34/1,281.34
6. Step 6: Final answer
   x = 1,334.51