Finding the Fourth Proportional to 2,643,139, 3,647,535.06 and 1,435,915

Step by Step Solution

1. Step 1: Write the proportion equation
   2,643,139 : 3,647,535.06 = 1,435,915 : x
2. Step 2: Convert to fraction form
   2,643,139/3,647,535.06 = 1,435,915/x
3. Step 3: Cross multiply
   2,643,139x = 3,647,535.06 × 1,435,915
4. Step 4: Simplify right side
   2,643,139x = 5,237,550,305,679.90
5. Step 5: Solve for x
   x = 5,237,550,305,679.90/2,643,139
6. Step 6: Final answer
   x = 1,981,564.46