Finding the Fourth Proportional to 3,456.56, 5,186.13 and 2,070.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,456.56 : 5,186.13 = 2,070.88 : x
2. Step 2: Convert to fraction form
   3,456.56/5,186.13 = 2,070.88/x
3. Step 3: Cross multiply
   3,456.56x = 5,186.13 × 2,070.88
4. Step 4: Simplify right side
   3,456.56x = 10,739,852.89
5. Step 5: Solve for x
   x = 10,739,852.89/3,456.56
6. Step 6: Final answer
   x = 3,107.09