Finding the Fourth Proportional to 770,131.74, 1,062,456.37 and 515,564.94

Step by Step Solution

1. Step 1: Write the proportion equation
   770,131.74 : 1,062,456.37 = 515,564.94 : x
2. Step 2: Convert to fraction form
   770,131.74/1,062,456.37 = 515,564.94/x
3. Step 3: Cross multiply
   770,131.74x = 1,062,456.37 × 515,564.94
4. Step 4: Simplify right side
   770,131.74x = 547,765,253,362.76
5. Step 5: Solve for x
   x = 547,765,253,362.76/770,131.74
6. Step 6: Final answer
   x = 711,261.76