Finding the Fourth Proportional to 2,108.70, 2,910.20 and 1,164.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,108.70 : 2,910.20 = 1,164.71 : x
2. Step 2: Convert to fraction form
   2,108.70/2,910.20 = 1,164.71/x
3. Step 3: Cross multiply
   2,108.70x = 2,910.20 × 1,164.71
4. Step 4: Simplify right side
   2,108.70x = 3,389,540.49
5. Step 5: Solve for x
   x = 3,389,540.49/2,108.70
6. Step 6: Final answer
   x = 1,607.41