Finding the Fourth Proportional to 2,499, 3,748.52 and 767.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499 : 3,748.52 = 767.76 : x
2. Step 2: Convert to fraction form
   2,499/3,748.52 = 767.76/x
3. Step 3: Cross multiply
   2,499x = 3,748.52 × 767.76
4. Step 4: Simplify right side
   2,499x = 2,877,963.72
5. Step 5: Solve for x
   x = 2,877,963.72/2,499
6. Step 6: Final answer
   x = 1,151.65