Finding the Fourth Proportional to 2,513.40, 3,768.76 and 869.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,513.40 : 3,768.76 = 869.52 : x
2. Step 2: Convert to fraction form
   2,513.40/3,768.76 = 869.52/x
3. Step 3: Cross multiply
   2,513.40x = 3,768.76 × 869.52
4. Step 4: Simplify right side
   2,513.40x = 3,277,012.20
5. Step 5: Solve for x
   x = 3,277,012.20/2,513.40
6. Step 6: Final answer
   x = 1,303.82