Finding the Fourth Proportional to 3,671.31, 5,066.72 and 2,099.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,671.31 : 5,066.72 = 2,099.71 : x
2. Step 2: Convert to fraction form
   3,671.31/5,066.72 = 2,099.71/x
3. Step 3: Cross multiply
   3,671.31x = 5,066.72 × 2,099.71
4. Step 4: Simplify right side
   3,671.31x = 10,638,642.65
5. Step 5: Solve for x
   x = 10,638,642.65/3,671.31
6. Step 6: Final answer
   x = 2,897.78