Finding the Fourth Proportional to 2,511.27, 3,465.12 and 1,392.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,511.27 : 3,465.12 = 1,392.02 : x
2. Step 2: Convert to fraction form
   2,511.27/3,465.12 = 1,392.02/x
3. Step 3: Cross multiply
   2,511.27x = 3,465.12 × 1,392.02
4. Step 4: Simplify right side
   2,511.27x = 4,823,516.34
5. Step 5: Solve for x
   x = 4,823,516.34/2,511.27
6. Step 6: Final answer
   x = 1,920.75