Finding the Fourth Proportional to 1,280,136.37, 1,766,641.86 and 736,272.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,280,136.37 : 1,766,641.86 = 736,272.31 : x
2. Step 2: Convert to fraction form
   1,280,136.37/1,766,641.86 = 736,272.31/x
3. Step 3: Cross multiply
   1,280,136.37x = 1,766,641.86 × 736,272.31
4. Step 4: Simplify right side
   1,280,136.37x = 1,300,729,483,204.90
5. Step 5: Solve for x
   x = 1,300,729,483,204.90/1,280,136.37
6. Step 6: Final answer
   x = 1,016,086.66