Finding the Fourth Proportional to 1,477.79, 2,039.33 and 814.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,477.79 : 2,039.33 = 814.63 : x
2. Step 2: Convert to fraction form
   1,477.79/2,039.33 = 814.63/x
3. Step 3: Cross multiply
   1,477.79x = 2,039.33 × 814.63
4. Step 4: Simplify right side
   1,477.79x = 1,661,301.31
5. Step 5: Solve for x
   x = 1,661,301.31/1,477.79
6. Step 6: Final answer
   x = 1,124.18