Finding the Fourth Proportional to 2,070.63, 3,105.98 and 609.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.63 : 3,105.98 = 609.93 : x
2. Step 2: Convert to fraction form
   2,070.63/3,105.98 = 609.93/x
3. Step 3: Cross multiply
   2,070.63x = 3,105.98 × 609.93
4. Step 4: Simplify right side
   2,070.63x = 1,894,429.62
5. Step 5: Solve for x
   x = 1,894,429.62/2,070.63
6. Step 6: Final answer
   x = 914.90