Finding the Fourth Proportional to 2,105.88, 2,906.16 and 1,174.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.88 : 2,906.16 = 1,174.32 : x
2. Step 2: Convert to fraction form
   2,105.88/2,906.16 = 1,174.32/x
3. Step 3: Cross multiply
   2,105.88x = 2,906.16 × 1,174.32
4. Step 4: Simplify right side
   2,105.88x = 3,412,761.81
5. Step 5: Solve for x
   x = 3,412,761.81/2,105.88
6. Step 6: Final answer
   x = 1,620.59