Finding the Fourth Proportional to 1,809.54, 2,499.46 and 1,338.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,809.54 : 2,499.46 = 1,338.12 : x
2. Step 2: Convert to fraction form
   1,809.54/2,499.46 = 1,338.12/x
3. Step 3: Cross multiply
   1,809.54x = 2,499.46 × 1,338.12
4. Step 4: Simplify right side
   1,809.54x = 3,344,574.07
5. Step 5: Solve for x
   x = 3,344,574.07/1,809.54
6. Step 6: Final answer
   x = 1,848.30