Finding the Fourth Proportional to 1,718,105.12, 2,577,718.25 and 819,430.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,718,105.12 : 2,577,718.25 = 819,430.10 : x
2. Step 2: Convert to fraction form
   1,718,105.12/2,577,718.25 = 819,430.10/x
3. Step 3: Cross multiply
   1,718,105.12x = 2,577,718.25 × 819,430.10
4. Step 4: Simplify right side
   1,718,105.12x = 2,112,259,906,383.58
5. Step 5: Solve for x
   x = 2,112,259,906,383.58/1,718,105.12
6. Step 6: Final answer
   x = 1,229,412.50