Finding the Fourth Proportional to 3,086.82, 4,259.78 and 1,670.47

Step by Step Solution

1. Step 1: Write the proportion equation
   3,086.82 : 4,259.78 = 1,670.47 : x
2. Step 2: Convert to fraction form
   3,086.82/4,259.78 = 1,670.47/x
3. Step 3: Cross multiply
   3,086.82x = 4,259.78 × 1,670.47
4. Step 4: Simplify right side
   3,086.82x = 7,115,845.92
5. Step 5: Solve for x
   x = 7,115,845.92/3,086.82
6. Step 6: Final answer
   x = 2,305.24