Finding the Fourth Proportional to 2,773.16, 3,828.42 and 2,142.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,773.16 : 3,828.42 = 2,142.32 : x
2. Step 2: Convert to fraction form
   2,773.16/3,828.42 = 2,142.32/x
3. Step 3: Cross multiply
   2,773.16x = 3,828.42 × 2,142.32
4. Step 4: Simplify right side
   2,773.16x = 8,201,700.73
5. Step 5: Solve for x
   x = 8,201,700.73/2,773.16
6. Step 6: Final answer
   x = 2,957.53