Finding the Fourth Proportional to 3,047.81, 4,570.80 and 1,292.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,047.81 : 4,570.80 = 1,292.78 : x
2. Step 2: Convert to fraction form
   3,047.81/4,570.80 = 1,292.78/x
3. Step 3: Cross multiply
   3,047.81x = 4,570.80 × 1,292.78
4. Step 4: Simplify right side
   3,047.81x = 5,909,019.69
5. Step 5: Solve for x
   x = 5,909,019.69/3,047.81
6. Step 6: Final answer
   x = 1,938.78