Finding the Fourth Proportional to 2,945.31, 4,418.12 and 754.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,945.31 : 4,418.12 = 754.07 : x
2. Step 2: Convert to fraction form
   2,945.31/4,418.12 = 754.07/x
3. Step 3: Cross multiply
   2,945.31x = 4,418.12 × 754.07
4. Step 4: Simplify right side
   2,945.31x = 3,331,545.89
5. Step 5: Solve for x
   x = 3,331,545.89/2,945.31
6. Step 6: Final answer
   x = 1,131.14