Finding the Fourth Proportional to 2,658.33, 3,985.61 and 1,013.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,658.33 : 3,985.61 = 1,013.49 : x
2. Step 2: Convert to fraction form
   2,658.33/3,985.61 = 1,013.49/x
3. Step 3: Cross multiply
   2,658.33x = 3,985.61 × 1,013.49
4. Step 4: Simplify right side
   2,658.33x = 4,039,370.81
5. Step 5: Solve for x
   x = 4,039,370.81/2,658.33
6. Step 6: Final answer
   x = 1,519.51