Finding the Fourth Proportional to 3,664.90, 5,057.59 and 2,071.47

Step by Step Solution

1. Step 1: Write the proportion equation
   3,664.90 : 5,057.59 = 2,071.47 : x
2. Step 2: Convert to fraction form
   3,664.90/5,057.59 = 2,071.47/x
3. Step 3: Cross multiply
   3,664.90x = 5,057.59 × 2,071.47
4. Step 4: Simplify right side
   3,664.90x = 10,476,663.63
5. Step 5: Solve for x
   x = 10,476,663.63/3,664.90
6. Step 6: Final answer
   x = 2,858.65