Finding the Fourth Proportional to 1,208.77, 1,804.37 and 1,118.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,208.77 : 1,804.37 = 1,118.59 : x
2. Step 2: Convert to fraction form
   1,208.77/1,804.37 = 1,118.59/x
3. Step 3: Cross multiply
   1,208.77x = 1,804.37 × 1,118.59
4. Step 4: Simplify right side
   1,208.77x = 2,018,353.03
5. Step 5: Solve for x
   x = 2,018,353.03/1,208.77
6. Step 6: Final answer
   x = 1,669.76