Finding the Fourth Proportional to 2,288,258.10, 3,428,450.55 and 1,489,128.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288,258.10 : 3,428,450.55 = 1,489,128.30 : x
2. Step 2: Convert to fraction form
   2,288,258.10/3,428,450.55 = 1,489,128.30/x
3. Step 3: Cross multiply
   2,288,258.10x = 3,428,450.55 × 1,489,128.30
4. Step 4: Simplify right side
   2,288,258.10x = 5,105,402,739,155.56
5. Step 5: Solve for x
   x = 5,105,402,739,155.56/2,288,258.10
6. Step 6: Final answer
   x = 2,231,130.63