Finding the Fourth Proportional to 1,377.42, 2,064.69 and 727.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.42 : 2,064.69 = 727.98 : x
2. Step 2: Convert to fraction form
   1,377.42/2,064.69 = 727.98/x
3. Step 3: Cross multiply
   1,377.42x = 2,064.69 × 727.98
4. Step 4: Simplify right side
   1,377.42x = 1,503,053.03
5. Step 5: Solve for x
   x = 1,503,053.03/1,377.42
6. Step 6: Final answer
   x = 1,091.21