Finding the Fourth Proportional to 2,101.82, 3,149.63 and 1,871.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.82 : 3,149.63 = 1,871.15 : x
2. Step 2: Convert to fraction form
   2,101.82/3,149.63 = 1,871.15/x
3. Step 3: Cross multiply
   2,101.82x = 3,149.63 × 1,871.15
4. Step 4: Simplify right side
   2,101.82x = 5,893,430.17
5. Step 5: Solve for x
   x = 5,893,430.17/2,101.82
6. Step 6: Final answer
   x = 2,803.97