Finding the Fourth Proportional to 1,379.31, 2,065.42 and 762.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,379.31 : 2,065.42 = 762.33 : x
2. Step 2: Convert to fraction form
   1,379.31/2,065.42 = 762.33/x
3. Step 3: Cross multiply
   1,379.31x = 2,065.42 × 762.33
4. Step 4: Simplify right side
   1,379.31x = 1,574,531.63
5. Step 5: Solve for x
   x = 1,574,531.63/1,379.31
6. Step 6: Final answer
   x = 1,141.54