Finding the Fourth Proportional to 2,760.81, 4,139.91 and 1,004.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,760.81 : 4,139.91 = 1,004.58 : x
2. Step 2: Convert to fraction form
   2,760.81/4,139.91 = 1,004.58/x
3. Step 3: Cross multiply
   2,760.81x = 4,139.91 × 1,004.58
4. Step 4: Simplify right side
   2,760.81x = 4,158,870.79
5. Step 5: Solve for x
   x = 4,158,870.79/2,760.81
6. Step 6: Final answer
   x = 1,506.40