Finding the Fourth Proportional to 897,290.36, 1,345,485.77 and 298,041.42

Step by Step Solution

1. Step 1: Write the proportion equation
   897,290.36 : 1,345,485.77 = 298,041.42 : x
2. Step 2: Convert to fraction form
   897,290.36/1,345,485.77 = 298,041.42/x
3. Step 3: Cross multiply
   897,290.36x = 1,345,485.77 × 298,041.42
4. Step 4: Simplify right side
   897,290.36x = 401,010,487,990.39
5. Step 5: Solve for x
   x = 401,010,487,990.39/897,290.36
6. Step 6: Final answer
   x = 446,912.74