Finding the Fourth Proportional to 2,013.35, 2,778.59 and 1,129.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,013.35 : 2,778.59 = 1,129.24 : x
2. Step 2: Convert to fraction form
   2,013.35/2,778.59 = 1,129.24/x
3. Step 3: Cross multiply
   2,013.35x = 2,778.59 × 1,129.24
4. Step 4: Simplify right side
   2,013.35x = 3,137,690.85
5. Step 5: Solve for x
   x = 3,137,690.85/2,013.35
6. Step 6: Final answer
   x = 1,558.44