Finding the Fourth Proportional to 1,911.50, 2,868.06 and 1,142

Step by Step Solution

1. Step 1: Write the proportion equation
   1,911.50 : 2,868.06 = 1,142 : x
2. Step 2: Convert to fraction form
   1,911.50/2,868.06 = 1,142/x
3. Step 3: Cross multiply
   1,911.50x = 2,868.06 × 1,142
4. Step 4: Simplify right side
   1,911.50x = 3,275,324.52
5. Step 5: Solve for x
   x = 3,275,324.52/1,911.50
6. Step 6: Final answer
   x = 1,713.48