Finding the Fourth Proportional to 1,721,256, 2,375,333.28 and 1,005,864

Step by Step Solution

1. Step 1: Write the proportion equation
   1,721,256 : 2,375,333.28 = 1,005,864 : x
2. Step 2: Convert to fraction form
   1,721,256/2,375,333.28 = 1,005,864/x
3. Step 3: Cross multiply
   1,721,256x = 2,375,333.28 × 1,005,864
4. Step 4: Simplify right side
   1,721,256x = 2,389,262,234,353.92
5. Step 5: Solve for x
   x = 2,389,262,234,353.92/1,721,256
6. Step 6: Final answer
   x = 1,388,092.32