Finding the Fourth Proportional to 2,686.27, 3,706.05 and 2,056.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,686.27 : 3,706.05 = 2,056.15 : x
2. Step 2: Convert to fraction form
   2,686.27/3,706.05 = 2,056.15/x
3. Step 3: Cross multiply
   2,686.27x = 3,706.05 × 2,056.15
4. Step 4: Simplify right side
   2,686.27x = 7,620,194.71
5. Step 5: Solve for x
   x = 7,620,194.71/2,686.27
6. Step 6: Final answer
   x = 2,836.72