Finding the Fourth Proportional to 1,622,411.42, 2,433,431.21 and 424,449.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,622,411.42 : 2,433,431.21 = 424,449.34 : x
2. Step 2: Convert to fraction form
   1,622,411.42/2,433,431.21 = 424,449.34/x
3. Step 3: Cross multiply
   1,622,411.42x = 2,433,431.21 × 424,449.34
4. Step 4: Simplify right side
   1,622,411.42x = 1,032,868,271,019.90
5. Step 5: Solve for x
   x = 1,032,868,271,019.90/1,622,411.42
6. Step 6: Final answer
   x = 636,625.37