Finding the Fourth Proportional to 555,055.34, 765,976.35 and 300,406.52

Step by Step Solution

1. Step 1: Write the proportion equation
   555,055.34 : 765,976.35 = 300,406.52 : x
2. Step 2: Convert to fraction form
   555,055.34/765,976.35 = 300,406.52/x
3. Step 3: Cross multiply
   555,055.34x = 765,976.35 × 300,406.52
4. Step 4: Simplify right side
   555,055.34x = 230,104,291,057.48
5. Step 5: Solve for x
   x = 230,104,291,057.48/555,055.34
6. Step 6: Final answer
   x = 414,560.99