Finding the Fourth Proportional to 1,379.10, 1,903.18 and 758.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,379.10 : 1,903.18 = 758.10 : x
2. Step 2: Convert to fraction form
   1,379.10/1,903.18 = 758.10/x
3. Step 3: Cross multiply
   1,379.10x = 1,903.18 × 758.10
4. Step 4: Simplify right side
   1,379.10x = 1,442,800.76
5. Step 5: Solve for x
   x = 1,442,800.76/1,379.10
6. Step 6: Final answer
   x = 1,046.19