Finding the Fourth Proportional to 2,807.72, 4,211.59 and 727.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,807.72 : 4,211.59 = 727.58 : x
2. Step 2: Convert to fraction form
   2,807.72/4,211.59 = 727.58/x
3. Step 3: Cross multiply
   2,807.72x = 4,211.59 × 727.58
4. Step 4: Simplify right side
   2,807.72x = 3,064,247.59
5. Step 5: Solve for x
   x = 3,064,247.59/2,807.72
6. Step 6: Final answer
   x = 1,091.37