Finding the Fourth Proportional to 1,274,459.27, 1,911,693.83 and 516,315.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,274,459.27 : 1,911,693.83 = 516,315.06 : x
2. Step 2: Convert to fraction form
   1,274,459.27/1,911,693.83 = 516,315.06/x
3. Step 3: Cross multiply
   1,274,459.27x = 1,911,693.83 × 516,315.06
4. Step 4: Simplify right side
   1,274,459.27x = 987,036,311,956.51
5. Step 5: Solve for x
   x = 987,036,311,956.51/1,274,459.27
6. Step 6: Final answer
   x = 774,474.59