Finding the Fourth Proportional to 2,636,678, 3,638,615.64 and 1,429,454

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636,678 : 3,638,615.64 = 1,429,454 : x
2. Step 2: Convert to fraction form
   2,636,678/3,638,615.64 = 1,429,454/x
3. Step 3: Cross multiply
   2,636,678x = 3,638,615.64 × 1,429,454
4. Step 4: Simplify right side
   2,636,678x = 5,201,233,681,060.56
5. Step 5: Solve for x
   x = 5,201,233,681,060.56/2,636,678
6. Step 6: Final answer
   x = 1,972,646.52