Finding the Fourth Proportional to 2,470.86, 3,704.67 and 804.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,470.86 : 3,704.67 = 804.78 : x
2. Step 2: Convert to fraction form
   2,470.86/3,704.67 = 804.78/x
3. Step 3: Cross multiply
   2,470.86x = 3,704.67 × 804.78
4. Step 4: Simplify right side
   2,470.86x = 2,981,444.32
5. Step 5: Solve for x
   x = 2,981,444.32/2,470.86
6. Step 6: Final answer
   x = 1,206.64