Finding the Fourth Proportional to 988,443.60, 1,482,892.94 and 419,842.70

Step by Step Solution

1. Step 1: Write the proportion equation
   988,443.60 : 1,482,892.94 = 419,842.70 : x
2. Step 2: Convert to fraction form
   988,443.60/1,482,892.94 = 419,842.70/x
3. Step 3: Cross multiply
   988,443.60x = 1,482,892.94 × 419,842.70
4. Step 4: Simplify right side
   988,443.60x = 622,581,773,641.33
5. Step 5: Solve for x
   x = 622,581,773,641.33/988,443.60
6. Step 6: Final answer
   x = 629,860.70