Finding the Fourth Proportional to 2,105.79, 2,906.34 and 1,607.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.79 : 2,906.34 = 1,607.49 : x
2. Step 2: Convert to fraction form
   2,105.79/2,906.34 = 1,607.49/x
3. Step 3: Cross multiply
   2,105.79x = 2,906.34 × 1,607.49
4. Step 4: Simplify right side
   2,105.79x = 4,671,912.49
5. Step 5: Solve for x
   x = 4,671,912.49/2,105.79
6. Step 6: Final answer
   x = 2,218.60