Finding the Fourth Proportional to 769,064.72, 1,061,303.28 and 446,963.36

Step by Step Solution

1. Step 1: Write the proportion equation
   769,064.72 : 1,061,303.28 = 446,963.36 : x
2. Step 2: Convert to fraction form
   769,064.72/1,061,303.28 = 446,963.36/x
3. Step 3: Cross multiply
   769,064.72x = 1,061,303.28 × 446,963.36
4. Step 4: Simplify right side
   769,064.72x = 474,363,680,007.82
5. Step 5: Solve for x
   x = 474,363,680,007.82/769,064.72
6. Step 6: Final answer
   x = 616,805.93