Finding the Fourth Proportional to 765,018.69, 1,055,660.72 and 442,748.76

Step by Step Solution

1. Step 1: Write the proportion equation
   765,018.69 : 1,055,660.72 = 442,748.76 : x
2. Step 2: Convert to fraction form
   765,018.69/1,055,660.72 = 442,748.76/x
3. Step 3: Cross multiply
   765,018.69x = 1,055,660.72 × 442,748.76
4. Step 4: Simplify right side
   765,018.69x = 467,392,472,546.96
5. Step 5: Solve for x
   x = 467,392,472,546.96/765,018.69
6. Step 6: Final answer
   x = 610,955.63