Finding the Fourth Proportional to 2,113.31, 3,170.31 and 1,722.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,113.31 : 3,170.31 = 1,722.39 : x
2. Step 2: Convert to fraction form
   2,113.31/3,170.31 = 1,722.39/x
3. Step 3: Cross multiply
   2,113.31x = 3,170.31 × 1,722.39
4. Step 4: Simplify right side
   2,113.31x = 5,460,491.89
5. Step 5: Solve for x
   x = 5,460,491.89/2,113.31
6. Step 6: Final answer
   x = 2,583.85