Finding the Fourth Proportional to 2,485.69, 3,729.14 and 754.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.69 : 3,729.14 = 754.31 : x
2. Step 2: Convert to fraction form
   2,485.69/3,729.14 = 754.31/x
3. Step 3: Cross multiply
   2,485.69x = 3,729.14 × 754.31
4. Step 4: Simplify right side
   2,485.69x = 2,812,935.97
5. Step 5: Solve for x
   x = 2,812,935.97/2,485.69
6. Step 6: Final answer
   x = 1,131.65