Finding the Fourth Proportional to 1,276, 1,756.56 and 1,144.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,276 : 1,756.56 = 1,144.96 : x
2. Step 2: Convert to fraction form
   1,276/1,756.56 = 1,144.96/x
3. Step 3: Cross multiply
   1,276x = 1,756.56 × 1,144.96
4. Step 4: Simplify right side
   1,276x = 2,011,190.94
5. Step 5: Solve for x
   x = 2,011,190.94/1,276
6. Step 6: Final answer
   x = 1,576.17