Finding the Fourth Proportional to 2,070.35, 3,105.62 and 683.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.35 : 3,105.62 = 683.63 : x
2. Step 2: Convert to fraction form
   2,070.35/3,105.62 = 683.63/x
3. Step 3: Cross multiply
   2,070.35x = 3,105.62 × 683.63
4. Step 4: Simplify right side
   2,070.35x = 2,123,076.05
5. Step 5: Solve for x
   x = 2,123,076.05/2,070.35
6. Step 6: Final answer
   x = 1,025.47