Finding the Fourth Proportional to 2,070.12, 3,105.98 and 1,249

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.12 : 3,105.98 = 1,249 : x
2. Step 2: Convert to fraction form
   2,070.12/3,105.98 = 1,249/x
3. Step 3: Cross multiply
   2,070.12x = 3,105.98 × 1,249
4. Step 4: Simplify right side
   2,070.12x = 3,879,369.02
5. Step 5: Solve for x
   x = 3,879,369.02/2,070.12
6. Step 6: Final answer
   x = 1,873.98