Finding the Fourth Proportional to 2,070.24, 3,105.39 and 609.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.24 : 3,105.39 = 609.43 : x
2. Step 2: Convert to fraction form
   2,070.24/3,105.39 = 609.43/x
3. Step 3: Cross multiply
   2,070.24x = 3,105.39 × 609.43
4. Step 4: Simplify right side
   2,070.24x = 1,892,502.30
5. Step 5: Solve for x
   x = 1,892,502.30/2,070.24
6. Step 6: Final answer
   x = 914.15