Finding the Fourth Proportional to 2,630.49, 3,945.68 and 1,070.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,630.49 : 3,945.68 = 1,070.43 : x
2. Step 2: Convert to fraction form
   2,630.49/3,945.68 = 1,070.43/x
3. Step 3: Cross multiply
   2,630.49x = 3,945.68 × 1,070.43
4. Step 4: Simplify right side
   2,630.49x = 4,223,558.11
5. Step 5: Solve for x
   x = 4,223,558.11/2,630.49
6. Step 6: Final answer
   x = 1,605.62