Finding the Fourth Proportional to 1,385,976, 1,912,647 and 750,072

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385,976 : 1,912,647 = 750,072 : x
2. Step 2: Convert to fraction form
   1,385,976/1,912,647 = 750,072/x
3. Step 3: Cross multiply
   1,385,976x = 1,912,647 × 750,072
4. Step 4: Simplify right side
   1,385,976x = 1,434,622,960,584
5. Step 5: Solve for x
   x = 1,434,622,960,584/1,385,976
6. Step 6: Final answer
   x = 1,035,099.42