Finding the Fourth Proportional to 778,749.52, 1,074,672.84 and 439,216.72

Step by Step Solution

1. Step 1: Write the proportion equation
   778,749.52 : 1,074,672.84 = 439,216.72 : x
2. Step 2: Convert to fraction form
   778,749.52/1,074,672.84 = 439,216.72/x
3. Step 3: Cross multiply
   778,749.52x = 1,074,672.84 × 439,216.72
4. Step 4: Simplify right side
   778,749.52x = 472,014,279,857.89
5. Step 5: Solve for x
   x = 472,014,279,857.89/778,749.52
6. Step 6: Final answer
   x = 606,118.23