Finding the Fourth Proportional to 1,300,388.56, 1,951,353.42 and 724,493.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300,388.56 : 1,951,353.42 = 724,493.86 : x
2. Step 2: Convert to fraction form
   1,300,388.56/1,951,353.42 = 724,493.86/x
3. Step 3: Cross multiply
   1,300,388.56x = 1,951,353.42 × 724,493.86
4. Step 4: Simplify right side
   1,300,388.56x = 1,413,743,571,480.00
5. Step 5: Solve for x
   x = 1,413,743,571,480.00/1,300,388.56
6. Step 6: Final answer
   x = 1,087,170.11