Finding the Fourth Proportional to 2,621.34, 3,932.37 and 889.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.34 : 3,932.37 = 889.50 : x
2. Step 2: Convert to fraction form
   2,621.34/3,932.37 = 889.50/x
3. Step 3: Cross multiply
   2,621.34x = 3,932.37 × 889.50
4. Step 4: Simplify right side
   2,621.34x = 3,497,843.12
5. Step 5: Solve for x
   x = 3,497,843.12/2,621.34
6. Step 6: Final answer
   x = 1,334.37