Finding the Fourth Proportional to 3,066.89, 4,231.57 and 1,807.85

Step by Step Solution

1. Step 1: Write the proportion equation
   3,066.89 : 4,231.57 = 1,807.85 : x
2. Step 2: Convert to fraction form
   3,066.89/4,231.57 = 1,807.85/x
3. Step 3: Cross multiply
   3,066.89x = 4,231.57 × 1,807.85
4. Step 4: Simplify right side
   3,066.89x = 7,650,043.82
5. Step 5: Solve for x
   x = 7,650,043.82/3,066.89
6. Step 6: Final answer
   x = 2,494.40