Finding the Fourth Proportional to 2,507.67, 3,761.55 and 776.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,507.67 : 3,761.55 = 776.25 : x
2. Step 2: Convert to fraction form
   2,507.67/3,761.55 = 776.25/x
3. Step 3: Cross multiply
   2,507.67x = 3,761.55 × 776.25
4. Step 4: Simplify right side
   2,507.67x = 2,919,903.19
5. Step 5: Solve for x
   x = 2,919,903.19/2,507.67
6. Step 6: Final answer
   x = 1,164.39