Finding the Fourth Proportional to 1,225,383.48, 1,691,019.81 and 674,087.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,225,383.48 : 1,691,019.81 = 674,087.31 : x
2. Step 2: Convert to fraction form
   1,225,383.48/1,691,019.81 = 674,087.31/x
3. Step 3: Cross multiply
   1,225,383.48x = 1,691,019.81 × 674,087.31
4. Step 4: Simplify right side
   1,225,383.48x = 1,139,894,994,879.61
5. Step 5: Solve for x
   x = 1,139,894,994,879.61/1,225,383.48
6. Step 6: Final answer
   x = 930,235.32