Finding the Fourth Proportional to 897,288.42, 1,345,482.86 and 298,039.48

Step by Step Solution

1. Step 1: Write the proportion equation
   897,288.42 : 1,345,482.86 = 298,039.48 : x
2. Step 2: Convert to fraction form
   897,288.42/1,345,482.86 = 298,039.48/x
3. Step 3: Cross multiply
   897,288.42x = 1,345,482.86 × 298,039.48
4. Step 4: Simplify right side
   897,288.42x = 401,007,011,943.31
5. Step 5: Solve for x
   x = 401,007,011,943.31/897,288.42
6. Step 6: Final answer
   x = 446,909.83