Finding the Fourth Proportional to 2,045.24, 3,064.20 and 1,392.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,045.24 : 3,064.20 = 1,392.78 : x
2. Step 2: Convert to fraction form
   2,045.24/3,064.20 = 1,392.78/x
3. Step 3: Cross multiply
   2,045.24x = 3,064.20 × 1,392.78
4. Step 4: Simplify right side
   2,045.24x = 4,267,756.48
5. Step 5: Solve for x
   x = 4,267,756.48/2,045.24
6. Step 6: Final answer
   x = 2,086.68