Finding the Fourth Proportional to 1,966.42, 2,945.76 and 1,142.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,966.42 : 2,945.76 = 1,142.96 : x
2. Step 2: Convert to fraction form
   1,966.42/2,945.76 = 1,142.96/x
3. Step 3: Cross multiply
   1,966.42x = 2,945.76 × 1,142.96
4. Step 4: Simplify right side
   1,966.42x = 3,366,885.85
5. Step 5: Solve for x
   x = 3,366,885.85/1,966.42
6. Step 6: Final answer
   x = 1,712.19