Finding the Fourth Proportional to 3,776.31, 5,642.82 and 2,881.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,776.31 : 5,642.82 = 2,881.89 : x
2. Step 2: Convert to fraction form
   3,776.31/5,642.82 = 2,881.89/x
3. Step 3: Cross multiply
   3,776.31x = 5,642.82 × 2,881.89
4. Step 4: Simplify right side
   3,776.31x = 16,261,986.53
5. Step 5: Solve for x
   x = 16,261,986.53/3,776.31
6. Step 6: Final answer
   x = 4,306.32