Finding the Fourth Proportional to 2,106.25, 2,906.60 and 1,162.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.25 : 2,906.60 = 1,162.05 : x
2. Step 2: Convert to fraction form
   2,106.25/2,906.60 = 1,162.05/x
3. Step 3: Cross multiply
   2,106.25x = 2,906.60 × 1,162.05
4. Step 4: Simplify right side
   2,106.25x = 3,377,601.63
5. Step 5: Solve for x
   x = 3,377,601.63/2,106.25
6. Step 6: Final answer
   x = 1,603.61