Finding the Fourth Proportional to 2,538.67, 3,807.19 and 806.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,538.67 : 3,807.19 = 806.89 : x
2. Step 2: Convert to fraction form
   2,538.67/3,807.19 = 806.89/x
3. Step 3: Cross multiply
   2,538.67x = 3,807.19 × 806.89
4. Step 4: Simplify right side
   2,538.67x = 3,071,983.54
5. Step 5: Solve for x
   x = 3,071,983.54/2,538.67
6. Step 6: Final answer
   x = 1,210.08