Finding the Fourth Proportional to 1,264,728.72, 1,897,096.32 and 516,774.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,264,728.72 : 1,897,096.32 = 516,774.72 : x
2. Step 2: Convert to fraction form
   1,264,728.72/1,897,096.32 = 516,774.72/x
3. Step 3: Cross multiply
   1,264,728.72x = 1,897,096.32 × 516,774.72
4. Step 4: Simplify right side
   1,264,728.72x = 980,371,419,581.03
5. Step 5: Solve for x
   x = 980,371,419,581.03/1,264,728.72
6. Step 6: Final answer
   x = 775,163.40