Finding the Fourth Proportional to 1,963.42, 2,942.76 and 866.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,963.42 : 2,942.76 = 866.54 : x
2. Step 2: Convert to fraction form
   1,963.42/2,942.76 = 866.54/x
3. Step 3: Cross multiply
   1,963.42x = 2,942.76 × 866.54
4. Step 4: Simplify right side
   1,963.42x = 2,550,019.25
5. Step 5: Solve for x
   x = 2,550,019.25/1,963.42
6. Step 6: Final answer
   x = 1,298.76