Finding the Fourth Proportional to 1,142.78, 1,704.64 and 1,033.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,142.78 : 1,704.64 = 1,033.34 : x
2. Step 2: Convert to fraction form
   1,142.78/1,704.64 = 1,033.34/x
3. Step 3: Cross multiply
   1,142.78x = 1,704.64 × 1,033.34
4. Step 4: Simplify right side
   1,142.78x = 1,761,472.70
5. Step 5: Solve for x
   x = 1,761,472.70/1,142.78
6. Step 6: Final answer
   x = 1,541.39