Finding the Fourth Proportional to 2,790,356.39, 4,183,405.67 and 1,272,978.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,790,356.39 : 4,183,405.67 = 1,272,978.15 : x
2. Step 2: Convert to fraction form
   2,790,356.39/4,183,405.67 = 1,272,978.15/x
3. Step 3: Cross multiply
   2,790,356.39x = 4,183,405.67 × 1,272,978.15
4. Step 4: Simplify right side
   2,790,356.39x = 5,325,384,004,131.22
5. Step 5: Solve for x
   x = 5,325,384,004,131.22/2,790,356.39
6. Step 6: Final answer
   x = 1,908,496.00