Finding the Fourth Proportional to 660,460.72, 911,860.32 and 454,072.72

Step by Step Solution

1. Step 1: Write the proportion equation
   660,460.72 : 911,860.32 = 454,072.72 : x
2. Step 2: Convert to fraction form
   660,460.72/911,860.32 = 454,072.72/x
3. Step 3: Cross multiply
   660,460.72x = 911,860.32 × 454,072.72
4. Step 4: Simplify right side
   660,460.72x = 414,050,895,762.47
5. Step 5: Solve for x
   x = 414,050,895,762.47/660,460.72
6. Step 6: Final answer
   x = 626,912.22