Finding the Fourth Proportional to 1,264,744.72, 1,897,120.32 and 516,790.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,264,744.72 : 1,897,120.32 = 516,790.72 : x
2. Step 2: Convert to fraction form
   1,264,744.72/1,897,120.32 = 516,790.72/x
3. Step 3: Cross multiply
   1,264,744.72x = 1,897,120.32 × 516,790.72
4. Step 4: Simplify right side
   1,264,744.72x = 980,414,176,099.43
5. Step 5: Solve for x
   x = 980,414,176,099.43/1,264,744.72
6. Step 6: Final answer
   x = 775,187.40