Finding the Fourth Proportional to 2,495.12, 3,742.72 and 763.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,495.12 : 3,742.72 = 763.76 : x
2. Step 2: Convert to fraction form
   2,495.12/3,742.72 = 763.76/x
3. Step 3: Cross multiply
   2,495.12x = 3,742.72 × 763.76
4. Step 4: Simplify right side
   2,495.12x = 2,858,539.83
5. Step 5: Solve for x
   x = 2,858,539.83/2,495.12
6. Step 6: Final answer
   x = 1,145.65