Finding the Fourth Proportional to 2,137.89, 3,206.25 and 677.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,137.89 : 3,206.25 = 677.01 : x
2. Step 2: Convert to fraction form
   2,137.89/3,206.25 = 677.01/x
3. Step 3: Cross multiply
   2,137.89x = 3,206.25 × 677.01
4. Step 4: Simplify right side
   2,137.89x = 2,170,663.31
5. Step 5: Solve for x
   x = 2,170,663.31/2,137.89
6. Step 6: Final answer
   x = 1,015.33