Finding the Fourth Proportional to 2,511.34, 3,465.61 and 1,392.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,511.34 : 3,465.61 = 1,392.28 : x
2. Step 2: Convert to fraction form
   2,511.34/3,465.61 = 1,392.28/x
3. Step 3: Cross multiply
   2,511.34x = 3,465.61 × 1,392.28
4. Step 4: Simplify right side
   2,511.34x = 4,825,099.49
5. Step 5: Solve for x
   x = 4,825,099.49/2,511.34
6. Step 6: Final answer
   x = 1,921.32