Finding the Fourth Proportional to 897,341.78, 1,345,721.53 and 298,142.05

Step by Step Solution

1. Step 1: Write the proportion equation
   897,341.78 : 1,345,721.53 = 298,142.05 : x
2. Step 2: Convert to fraction form
   897,341.78/1,345,721.53 = 298,142.05/x
3. Step 3: Cross multiply
   897,341.78x = 1,345,721.53 × 298,142.05
4. Step 4: Simplify right side
   897,341.78x = 401,216,175,683.34
5. Step 5: Solve for x
   x = 401,216,175,683.34/897,341.78
6. Step 6: Final answer
   x = 447,116.34