Finding the Fourth Proportional to 2,500.74, 3,751.47 and 768.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,500.74 : 3,751.47 = 768.96 : x
2. Step 2: Convert to fraction form
   2,500.74/3,751.47 = 768.96/x
3. Step 3: Cross multiply
   2,500.74x = 3,751.47 × 768.96
4. Step 4: Simplify right side
   2,500.74x = 2,884,730.37
5. Step 5: Solve for x
   x = 2,884,730.37/2,500.74
6. Step 6: Final answer
   x = 1,153.55