Finding the Fourth Proportional to 2,772.72, 4,156.88 and 1,786.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,772.72 : 4,156.88 = 1,786.16 : x
2. Step 2: Convert to fraction form
   2,772.72/4,156.88 = 1,786.16/x
3. Step 3: Cross multiply
   2,772.72x = 4,156.88 × 1,786.16
4. Step 4: Simplify right side
   2,772.72x = 7,424,852.78
5. Step 5: Solve for x
   x = 7,424,852.78/2,772.72
6. Step 6: Final answer
   x = 2,677.82