Finding the Fourth Proportional to 3,036.81, 4,192.73 and 2,478.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,036.81 : 4,192.73 = 2,478.61 : x
2. Step 2: Convert to fraction form
   3,036.81/4,192.73 = 2,478.61/x
3. Step 3: Cross multiply
   3,036.81x = 4,192.73 × 2,478.61
4. Step 4: Simplify right side
   3,036.81x = 10,392,109.15
5. Step 5: Solve for x
   x = 10,392,109.15/3,036.81
6. Step 6: Final answer
   x = 3,422.05