Finding the Fourth Proportional to 2,100.67, 3,144.97 and 1,637.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.67 : 3,144.97 = 1,637.05 : x
2. Step 2: Convert to fraction form
   2,100.67/3,144.97 = 1,637.05/x
3. Step 3: Cross multiply
   2,100.67x = 3,144.97 × 1,637.05
4. Step 4: Simplify right side
   2,100.67x = 5,148,454.90
5. Step 5: Solve for x
   x = 5,148,454.90/2,100.67
6. Step 6: Final answer
   x = 2,450.86