Finding the Fourth Proportional to 1,389,941.69, 2,085,068.10 and 443,092.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,389,941.69 : 2,085,068.10 = 443,092.73 : x
2. Step 2: Convert to fraction form
   1,389,941.69/2,085,068.10 = 443,092.73/x
3. Step 3: Cross multiply
   1,389,941.69x = 2,085,068.10 × 443,092.73
4. Step 4: Simplify right side
   1,389,941.69x = 923,878,516,664.91
5. Step 5: Solve for x
   x = 923,878,516,664.91/1,389,941.69
6. Step 6: Final answer
   x = 664,688.69