Finding the Fourth Proportional to 1,076,964.27, 1,486,280.78 and 618,227.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076,964.27 : 1,486,280.78 = 618,227.31 : x
2. Step 2: Convert to fraction form
   1,076,964.27/1,486,280.78 = 618,227.31/x
3. Step 3: Cross multiply
   1,076,964.27x = 1,486,280.78 × 618,227.31
4. Step 4: Simplify right side
   1,076,964.27x = 918,859,368,524.10
5. Step 5: Solve for x
   x = 918,859,368,524.10/1,076,964.27
6. Step 6: Final answer
   x = 853,193.92