Finding the Fourth Proportional to 2,686.02, 3,707.36 and 2,118.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,686.02 : 3,707.36 = 2,118.52 : x
2. Step 2: Convert to fraction form
   2,686.02/3,707.36 = 2,118.52/x
3. Step 3: Cross multiply
   2,686.02x = 3,707.36 × 2,118.52
4. Step 4: Simplify right side
   2,686.02x = 7,854,116.31
5. Step 5: Solve for x
   x = 7,854,116.31/2,686.02
6. Step 6: Final answer
   x = 2,924.07