Finding the Fourth Proportional to 2,106.61, 2,906.89 and 1,162.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.61 : 2,906.89 = 1,162.45 : x
2. Step 2: Convert to fraction form
   2,106.61/2,906.89 = 1,162.45/x
3. Step 3: Cross multiply
   2,106.61x = 2,906.89 × 1,162.45
4. Step 4: Simplify right side
   2,106.61x = 3,379,115.01
5. Step 5: Solve for x
   x = 3,379,115.01/2,106.61
6. Step 6: Final answer
   x = 1,604.06