Finding the Fourth Proportional to 1,147,722.72, 1,721,570.04 and 516,190.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,147,722.72 : 1,721,570.04 = 516,190.56 : x
2. Step 2: Convert to fraction form
   1,147,722.72/1,721,570.04 = 516,190.56/x
3. Step 3: Cross multiply
   1,147,722.72x = 1,721,570.04 × 516,190.56
4. Step 4: Simplify right side
   1,147,722.72x = 888,658,203,026.82
5. Step 5: Solve for x
   x = 888,658,203,026.82/1,147,722.72
6. Step 6: Final answer
   x = 774,279.53