Finding the Fourth Proportional to 2,686.87, 3,707.32 and 1,536.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,686.87 : 3,707.32 = 1,536.91 : x
2. Step 2: Convert to fraction form
   2,686.87/3,707.32 = 1,536.91/x
3. Step 3: Cross multiply
   2,686.87x = 3,707.32 × 1,536.91
4. Step 4: Simplify right side
   2,686.87x = 5,697,790.96
5. Step 5: Solve for x
   x = 5,697,790.96/2,686.87
6. Step 6: Final answer
   x = 2,120.61