Finding the Fourth Proportional to 1,379.50, 1,903.71 and 758.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,379.50 : 1,903.71 = 758.54 : x
2. Step 2: Convert to fraction form
   1,379.50/1,903.71 = 758.54/x
3. Step 3: Cross multiply
   1,379.50x = 1,903.71 × 758.54
4. Step 4: Simplify right side
   1,379.50x = 1,444,040.18
5. Step 5: Solve for x
   x = 1,444,040.18/1,379.50
6. Step 6: Final answer
   x = 1,046.79