Finding the Fourth Proportional to 2,617.37, 3,925.45 and 767.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,617.37 : 3,925.45 = 767.99 : x
2. Step 2: Convert to fraction form
   2,617.37/3,925.45 = 767.99/x
3. Step 3: Cross multiply
   2,617.37x = 3,925.45 × 767.99
4. Step 4: Simplify right side
   2,617.37x = 3,014,699.52
5. Step 5: Solve for x
   x = 3,014,699.52/2,617.37
6. Step 6: Final answer
   x = 1,151.80