Finding the Fourth Proportional to 2,105,109.20, 3,155,590.20 and 1,040,315.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,109.20 : 3,155,590.20 = 1,040,315.60 : x
2. Step 2: Convert to fraction form
   2,105,109.20/3,155,590.20 = 1,040,315.60/x
3. Step 3: Cross multiply
   2,105,109.20x = 3,155,590.20 × 1,040,315.60
4. Step 4: Simplify right side
   2,105,109.20x = 3,282,809,712,267.12
5. Step 5: Solve for x
   x = 3,282,809,712,267.12/2,105,109.20
6. Step 6: Final answer
   x = 1,559,448.66