Finding the Fourth Proportional to 1,276.14, 1,910.42 and 1,142.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,276.14 : 1,910.42 = 1,142.50 : x
2. Step 2: Convert to fraction form
   1,276.14/1,910.42 = 1,142.50/x
3. Step 3: Cross multiply
   1,276.14x = 1,910.42 × 1,142.50
4. Step 4: Simplify right side
   1,276.14x = 2,182,654.85
5. Step 5: Solve for x
   x = 2,182,654.85/1,276.14
6. Step 6: Final answer
   x = 1,710.36