Finding the Fourth Proportional to 2,508.76, 3,462.32 and 1,389.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,508.76 : 3,462.32 = 1,389.74 : x
2. Step 2: Convert to fraction form
   2,508.76/3,462.32 = 1,389.74/x
3. Step 3: Cross multiply
   2,508.76x = 3,462.32 × 1,389.74
4. Step 4: Simplify right side
   2,508.76x = 4,811,736.73
5. Step 5: Solve for x
   x = 4,811,736.73/2,508.76
6. Step 6: Final answer
   x = 1,917.98