Finding the Fourth Proportional to 2,070.33, 3,105.99 and 609.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.33 : 3,105.99 = 609.45 : x
2. Step 2: Convert to fraction form
   2,070.33/3,105.99 = 609.45/x
3. Step 3: Cross multiply
   2,070.33x = 3,105.99 × 609.45
4. Step 4: Simplify right side
   2,070.33x = 1,892,945.61
5. Step 5: Solve for x
   x = 1,892,945.61/2,070.33
6. Step 6: Final answer
   x = 914.32