Finding the Fourth Proportional to 1,426,014.30, 2,139,371.37 and 415,145.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426,014.30 : 2,139,371.37 = 415,145.31 : x
2. Step 2: Convert to fraction form
   1,426,014.30/2,139,371.37 = 415,145.31/x
3. Step 3: Cross multiply
   1,426,014.30x = 2,139,371.37 × 415,145.31
4. Step 4: Simplify right side
   1,426,014.30x = 888,149,990,603.78
5. Step 5: Solve for x
   x = 888,149,990,603.78/1,426,014.30
6. Step 6: Final answer
   x = 622,819.83