Finding the Fourth Proportional to 1,358.97, 1,875.31 and 769.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,358.97 : 1,875.31 = 769.56 : x
2. Step 2: Convert to fraction form
   1,358.97/1,875.31 = 769.56/x
3. Step 3: Cross multiply
   1,358.97x = 1,875.31 × 769.56
4. Step 4: Simplify right side
   1,358.97x = 1,443,163.56
5. Step 5: Solve for x
   x = 1,443,163.56/1,358.97
6. Step 6: Final answer
   x = 1,061.95