Finding the Fourth Proportional to 2,070.86, 3,105.23 and 609.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.86 : 3,105.23 = 609.83 : x
2. Step 2: Convert to fraction form
   2,070.86/3,105.23 = 609.83/x
3. Step 3: Cross multiply
   2,070.86x = 3,105.23 × 609.83
4. Step 4: Simplify right side
   2,070.86x = 1,893,643.84
5. Step 5: Solve for x
   x = 1,893,643.84/2,070.86
6. Step 6: Final answer
   x = 914.42