Finding the Fourth Proportional to 3,671.31, 5,066.51 and 2,099.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,671.31 : 5,066.51 = 2,099.91 : x
2. Step 2: Convert to fraction form
   3,671.31/5,066.51 = 2,099.91/x
3. Step 3: Cross multiply
   3,671.31x = 5,066.51 × 2,099.91
4. Step 4: Simplify right side
   3,671.31x = 10,639,204.51
5. Step 5: Solve for x
   x = 10,639,204.51/3,671.31
6. Step 6: Final answer
   x = 2,897.93