Finding the Fourth Proportional to 2,065,445.15, 2,849,430.16 and 1,289,729.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,065,445.15 : 2,849,430.16 = 1,289,729.28 : x
2. Step 2: Convert to fraction form
   2,065,445.15/2,849,430.16 = 1,289,729.28/x
3. Step 3: Cross multiply
   2,065,445.15x = 2,849,430.16 × 1,289,729.28
4. Step 4: Simplify right side
   2,065,445.15x = 3,674,993,499,593.88
5. Step 5: Solve for x
   x = 3,674,993,499,593.88/2,065,445.15
6. Step 6: Final answer
   x = 1,779,274.31