Finding the Fourth Proportional to 1,397,439.42, 2,096,236.89 and 400,141.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397,439.42 : 2,096,236.89 = 400,141.50 : x
2. Step 2: Convert to fraction form
   1,397,439.42/2,096,236.89 = 400,141.50/x
3. Step 3: Cross multiply
   1,397,439.42x = 2,096,236.89 × 400,141.50
4. Step 4: Simplify right side
   1,397,439.42x = 838,791,373,519.94
5. Step 5: Solve for x
   x = 838,791,373,519.94/1,397,439.42
6. Step 6: Final answer
   x = 600,234.52