Finding the Fourth Proportional to 2,511.60, 3,466.00 and 1,392.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,511.60 : 3,466.00 = 1,392.54 : x
2. Step 2: Convert to fraction form
   2,511.60/3,466.00 = 1,392.54/x
3. Step 3: Cross multiply
   2,511.60x = 3,466.00 × 1,392.54
4. Step 4: Simplify right side
   2,511.60x = 4,826,536.68
5. Step 5: Solve for x
   x = 4,826,536.68/2,511.60
6. Step 6: Final answer
   x = 1,921.70