Finding the Fourth Proportional to 2,617.51, 3,926.54 and 768.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,617.51 : 3,926.54 = 768.62 : x
2. Step 2: Convert to fraction form
   2,617.51/3,926.54 = 768.62/x
3. Step 3: Cross multiply
   2,617.51x = 3,926.54 × 768.62
4. Step 4: Simplify right side
   2,617.51x = 3,018,017.17
5. Step 5: Solve for x
   x = 3,018,017.17/2,617.51
6. Step 6: Final answer
   x = 1,153.01