Finding the Fourth Proportional to 2,114.19, 2,917.79 and 1,170.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,114.19 : 2,917.79 = 1,170.20 : x
2. Step 2: Convert to fraction form
   2,114.19/2,917.79 = 1,170.20/x
3. Step 3: Cross multiply
   2,114.19x = 2,917.79 × 1,170.20
4. Step 4: Simplify right side
   2,114.19x = 3,414,397.86
5. Step 5: Solve for x
   x = 3,414,397.86/2,114.19
6. Step 6: Final answer
   x = 1,614.99