Finding the Fourth Proportional to 1,478.03, 2,039.55 and 814.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,478.03 : 2,039.55 = 814.83 : x
2. Step 2: Convert to fraction form
   1,478.03/2,039.55 = 814.83/x
3. Step 3: Cross multiply
   1,478.03x = 2,039.55 × 814.83
4. Step 4: Simplify right side
   1,478.03x = 1,661,886.53
5. Step 5: Solve for x
   x = 1,661,886.53/1,478.03
6. Step 6: Final answer
   x = 1,124.40