Finding the Fourth Proportional to 1,224,830.82, 1,837,443.33 and 426,339.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,224,830.82 : 1,837,443.33 = 426,339.30 : x
2. Step 2: Convert to fraction form
   1,224,830.82/1,837,443.33 = 426,339.30/x
3. Step 3: Cross multiply
   1,224,830.82x = 1,837,443.33 × 426,339.30
4. Step 4: Simplify right side
   1,224,830.82x = 783,374,303,101.87
5. Step 5: Solve for x
   x = 783,374,303,101.87/1,224,830.82
6. Step 6: Final answer
   x = 639,577.56