Finding the Fourth Proportional to 2,513.48, 3,768.69 and 1,126.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,513.48 : 3,768.69 = 1,126.55 : x
2. Step 2: Convert to fraction form
   2,513.48/3,768.69 = 1,126.55/x
3. Step 3: Cross multiply
   2,513.48x = 3,768.69 × 1,126.55
4. Step 4: Simplify right side
   2,513.48x = 4,245,631.37
5. Step 5: Solve for x
   x = 4,245,631.37/2,513.48
6. Step 6: Final answer
   x = 1,689.15