Finding the Fourth Proportional to 2,070.96, 3,106.23 and 684.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.96 : 3,106.23 = 684.52 : x
2. Step 2: Convert to fraction form
   2,070.96/3,106.23 = 684.52/x
3. Step 3: Cross multiply
   2,070.96x = 3,106.23 × 684.52
4. Step 4: Simplify right side
   2,070.96x = 2,126,276.56
5. Step 5: Solve for x
   x = 2,126,276.56/2,070.96
6. Step 6: Final answer
   x = 1,026.71