Finding the Fourth Proportional to 770,389.69, 1,063,478.28 and 460,401.63

Step by Step Solution

1. Step 1: Write the proportion equation
   770,389.69 : 1,063,478.28 = 460,401.63 : x
2. Step 2: Convert to fraction form
   770,389.69/1,063,478.28 = 460,401.63/x
3. Step 3: Cross multiply
   770,389.69x = 1,063,478.28 × 460,401.63
4. Step 4: Simplify right side
   770,389.69x = 489,627,131,279.59
5. Step 5: Solve for x
   x = 489,627,131,279.59/770,389.69
6. Step 6: Final answer
   x = 635,557.75