Finding the Fourth Proportional to 2,070.48, 3,105.30 and 609.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.48 : 3,105.30 = 609.50 : x
2. Step 2: Convert to fraction form
   2,070.48/3,105.30 = 609.50/x
3. Step 3: Cross multiply
   2,070.48x = 3,105.30 × 609.50
4. Step 4: Simplify right side
   2,070.48x = 1,892,680.35
5. Step 5: Solve for x
   x = 1,892,680.35/2,070.48
6. Step 6: Final answer
   x = 914.13