Finding the Fourth Proportional to 2,112.29, 2,913.29 and 1,970.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.29 : 2,913.29 = 1,970.81 : x
2. Step 2: Convert to fraction form
   2,112.29/2,913.29 = 1,970.81/x
3. Step 3: Cross multiply
   2,112.29x = 2,913.29 × 1,970.81
4. Step 4: Simplify right side
   2,112.29x = 5,741,541.06
5. Step 5: Solve for x
   x = 5,741,541.06/2,112.29
6. Step 6: Final answer
   x = 2,718.16