Finding the Fourth Proportional to 2,145.02, 3,216.87 and 683.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.02 : 3,216.87 = 683.82 : x
2. Step 2: Convert to fraction form
   2,145.02/3,216.87 = 683.82/x
3. Step 3: Cross multiply
   2,145.02x = 3,216.87 × 683.82
4. Step 4: Simplify right side
   2,145.02x = 2,199,760.04
5. Step 5: Solve for x
   x = 2,199,760.04/2,145.02
6. Step 6: Final answer
   x = 1,025.52