Finding the Fourth Proportional to 2,070.34, 3,105.27 and 683.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.34 : 3,105.27 = 683.68 : x
2. Step 2: Convert to fraction form
   2,070.34/3,105.27 = 683.68/x
3. Step 3: Cross multiply
   2,070.34x = 3,105.27 × 683.68
4. Step 4: Simplify right side
   2,070.34x = 2,123,010.99
5. Step 5: Solve for x
   x = 2,123,010.99/2,070.34
6. Step 6: Final answer
   x = 1,025.44