Finding the Fourth Proportional to 2,172,111.70, 3,258,167.55 and 1,321,806.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172,111.70 : 3,258,167.55 = 1,321,806.10 : x
2. Step 2: Convert to fraction form
   2,172,111.70/3,258,167.55 = 1,321,806.10/x
3. Step 3: Cross multiply
   2,172,111.70x = 3,258,167.55 × 1,321,806.10
4. Step 4: Simplify right side
   2,172,111.70x = 4,306,665,742,412.06
5. Step 5: Solve for x
   x = 4,306,665,742,412.06/2,172,111.70
6. Step 6: Final answer
   x = 1,982,709.15