Finding the Fourth Proportional to 2,686.76, 3,707.71 and 1,507.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,686.76 : 3,707.71 = 1,507.83 : x
2. Step 2: Convert to fraction form
   2,686.76/3,707.71 = 1,507.83/x
3. Step 3: Cross multiply
   2,686.76x = 3,707.71 × 1,507.83
4. Step 4: Simplify right side
   2,686.76x = 5,590,596.37
5. Step 5: Solve for x
   x = 5,590,596.37/2,686.76
6. Step 6: Final answer
   x = 2,080.79