Finding the Fourth Proportional to 1,355.94, 1,871.30 and 758.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,355.94 : 1,871.30 = 758.49 : x
2. Step 2: Convert to fraction form
   1,355.94/1,871.30 = 758.49/x
3. Step 3: Cross multiply
   1,355.94x = 1,871.30 × 758.49
4. Step 4: Simplify right side
   1,355.94x = 1,419,362.34
5. Step 5: Solve for x
   x = 1,419,362.34/1,355.94
6. Step 6: Final answer
   x = 1,046.77