Finding the Fourth Proportional to 2,070.69, 3,106.37 and 684.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.69 : 3,106.37 = 684.10 : x
2. Step 2: Convert to fraction form
   2,070.69/3,106.37 = 684.10/x
3. Step 3: Cross multiply
   2,070.69x = 3,106.37 × 684.10
4. Step 4: Simplify right side
   2,070.69x = 2,125,067.72
5. Step 5: Solve for x
   x = 2,125,067.72/2,070.69
6. Step 6: Final answer
   x = 1,026.26