Finding the Fourth Proportional to 1,477.91, 2,039.53 and 814.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,477.91 : 2,039.53 = 814.79 : x
2. Step 2: Convert to fraction form
   1,477.91/2,039.53 = 814.79/x
3. Step 3: Cross multiply
   1,477.91x = 2,039.53 × 814.79
4. Step 4: Simplify right side
   1,477.91x = 1,661,788.65
5. Step 5: Solve for x
   x = 1,661,788.65/1,477.91
6. Step 6: Final answer
   x = 1,124.42