Finding the Fourth Proportional to 1,760.75, 2,428.71 and 1,131.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,760.75 : 2,428.71 = 1,131.07 : x
2. Step 2: Convert to fraction form
   1,760.75/2,428.71 = 1,131.07/x
3. Step 3: Cross multiply
   1,760.75x = 2,428.71 × 1,131.07
4. Step 4: Simplify right side
   1,760.75x = 2,747,028.88
5. Step 5: Solve for x
   x = 2,747,028.88/1,760.75
6. Step 6: Final answer
   x = 1,560.15