Finding the Fourth Proportional to 2,499.39, 3,747.74 and 767.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.39 : 3,747.74 = 767.79 : x
2. Step 2: Convert to fraction form
   2,499.39/3,747.74 = 767.79/x
3. Step 3: Cross multiply
   2,499.39x = 3,747.74 × 767.79
4. Step 4: Simplify right side
   2,499.39x = 2,877,473.46
5. Step 5: Solve for x
   x = 2,877,473.46/2,499.39
6. Step 6: Final answer
   x = 1,151.27