Finding the Fourth Proportional to 1,817.69, 2,509.83 and 1,397.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,817.69 : 2,509.83 = 1,397.39 : x
2. Step 2: Convert to fraction form
   1,817.69/2,509.83 = 1,397.39/x
3. Step 3: Cross multiply
   1,817.69x = 2,509.83 × 1,397.39
4. Step 4: Simplify right side
   1,817.69x = 3,507,198.79
5. Step 5: Solve for x
   x = 3,507,198.79/1,817.69
6. Step 6: Final answer
   x = 1,929.49