Finding the Fourth Proportional to 1,939.12, 2,675.98 and 1,142.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,939.12 : 2,675.98 = 1,142.46 : x
2. Step 2: Convert to fraction form
   1,939.12/2,675.98 = 1,142.46/x
3. Step 3: Cross multiply
   1,939.12x = 2,675.98 × 1,142.46
4. Step 4: Simplify right side
   1,939.12x = 3,057,200.11
5. Step 5: Solve for x
   x = 3,057,200.11/1,939.12
6. Step 6: Final answer
   x = 1,576.59