Finding the Fourth Proportional to 1,138,694.72, 1,571,526.56 and 685,976

Step by Step Solution

1. Step 1: Write the proportion equation
   1,138,694.72 : 1,571,526.56 = 685,976 : x
2. Step 2: Convert to fraction form
   1,138,694.72/1,571,526.56 = 685,976/x
3. Step 3: Cross multiply
   1,138,694.72x = 1,571,526.56 × 685,976
4. Step 4: Simplify right side
   1,138,694.72x = 1,078,029,503,522.56
5. Step 5: Solve for x
   x = 1,078,029,503,522.56/1,138,694.72
6. Step 6: Final answer
   x = 946,723.90