Finding the Fourth Proportional to 1,379.51, 1,903.76 and 758.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,379.51 : 1,903.76 = 758.51 : x
2. Step 2: Convert to fraction form
   1,379.51/1,903.76 = 758.51/x
3. Step 3: Cross multiply
   1,379.51x = 1,903.76 × 758.51
4. Step 4: Simplify right side
   1,379.51x = 1,444,017.21
5. Step 5: Solve for x
   x = 1,444,017.21/1,379.51
6. Step 6: Final answer
   x = 1,046.76