Finding the Fourth Proportional to 1,387,800, 1,915,164 and 751,896

Step by Step Solution

1. Step 1: Write the proportion equation
   1,387,800 : 1,915,164 = 751,896 : x
2. Step 2: Convert to fraction form
   1,387,800/1,915,164 = 751,896/x
3. Step 3: Cross multiply
   1,387,800x = 1,915,164 × 751,896
4. Step 4: Simplify right side
   1,387,800x = 1,440,004,150,944
5. Step 5: Solve for x
   x = 1,440,004,150,944/1,387,800
6. Step 6: Final answer
   x = 1,037,616.48