Finding the Fourth Proportional to 1,620.55, 2,429.84 and 682.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,620.55 : 2,429.84 = 682.37 : x
2. Step 2: Convert to fraction form
   1,620.55/2,429.84 = 682.37/x
3. Step 3: Cross multiply
   1,620.55x = 2,429.84 × 682.37
4. Step 4: Simplify right side
   1,620.55x = 1,658,037.77
5. Step 5: Solve for x
   x = 1,658,037.77/1,620.55
6. Step 6: Final answer
   x = 1,023.14