Finding the Fourth Proportional to 2,508.82, 3,462.07 and 1,389.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,508.82 : 3,462.07 = 1,389.69 : x
2. Step 2: Convert to fraction form
   2,508.82/3,462.07 = 1,389.69/x
3. Step 3: Cross multiply
   2,508.82x = 3,462.07 × 1,389.69
4. Step 4: Simplify right side
   2,508.82x = 4,811,200.58
5. Step 5: Solve for x
   x = 4,811,200.58/2,508.82
6. Step 6: Final answer
   x = 1,917.72