Finding the Fourth Proportional to 2,114.91, 2,918.79 and 1,170.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,114.91 : 2,918.79 = 1,170.81 : x
2. Step 2: Convert to fraction form
   2,114.91/2,918.79 = 1,170.81/x
3. Step 3: Cross multiply
   2,114.91x = 2,918.79 × 1,170.81
4. Step 4: Simplify right side
   2,114.91x = 3,417,348.52
5. Step 5: Solve for x
   x = 3,417,348.52/2,114.91
6. Step 6: Final answer
   x = 1,615.84