Finding the Fourth Proportional to 1,804.98, 2,709.28 and 1,218.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,804.98 : 2,709.28 = 1,218.12 : x
2. Step 2: Convert to fraction form
   1,804.98/2,709.28 = 1,218.12/x
3. Step 3: Cross multiply
   1,804.98x = 2,709.28 × 1,218.12
4. Step 4: Simplify right side
   1,804.98x = 3,300,228.15
5. Step 5: Solve for x
   x = 3,300,228.15/1,804.98
6. Step 6: Final answer
   x = 1,828.40