Finding the Fourth Proportional to 3,787.98, 5,225.72 and 2,215.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,787.98 : 5,225.72 = 2,215.38 : x
2. Step 2: Convert to fraction form
   3,787.98/5,225.72 = 2,215.38/x
3. Step 3: Cross multiply
   3,787.98x = 5,225.72 × 2,215.38
4. Step 4: Simplify right side
   3,787.98x = 11,576,955.57
5. Step 5: Solve for x
   x = 11,576,955.57/3,787.98
6. Step 6: Final answer
   x = 3,056.23