Finding the Fourth Proportional to 3,787.50, 5,227.47 and 2,131.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,787.50 : 5,227.47 = 2,131.50 : x
2. Step 2: Convert to fraction form
   3,787.50/5,227.47 = 2,131.50/x
3. Step 3: Cross multiply
   3,787.50x = 5,227.47 × 2,131.50
4. Step 4: Simplify right side
   3,787.50x = 11,142,352.31
5. Step 5: Solve for x
   x = 11,142,352.31/3,787.50
6. Step 6: Final answer
   x = 2,941.88