Finding the Fourth Proportional to 1,477.91, 2,039.61 and 814.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,477.91 : 2,039.61 = 814.91 : x
2. Step 2: Convert to fraction form
   1,477.91/2,039.61 = 814.91/x
3. Step 3: Cross multiply
   1,477.91x = 2,039.61 × 814.91
4. Step 4: Simplify right side
   1,477.91x = 1,662,098.59
5. Step 5: Solve for x
   x = 1,662,098.59/1,477.91
6. Step 6: Final answer
   x = 1,124.63