Finding the Fourth Proportional to 806,501.78, 1,112,963.63 and 443,917.83

Step by Step Solution

1. Step 1: Write the proportion equation
   806,501.78 : 1,112,963.63 = 443,917.83 : x
2. Step 2: Convert to fraction form
   806,501.78/1,112,963.63 = 443,917.83/x
3. Step 3: Cross multiply
   806,501.78x = 1,112,963.63 × 443,917.83
4. Step 4: Simplify right side
   806,501.78x = 494,064,401,452.55
5. Step 5: Solve for x
   x = 494,064,401,452.55/806,501.78
6. Step 6: Final answer
   x = 612,601.75