Finding the Fourth Proportional to 2,708.31, 4,061.91 and 760.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,708.31 : 4,061.91 = 760.53 : x
2. Step 2: Convert to fraction form
   2,708.31/4,061.91 = 760.53/x
3. Step 3: Cross multiply
   2,708.31x = 4,061.91 × 760.53
4. Step 4: Simplify right side
   2,708.31x = 3,089,204.41
5. Step 5: Solve for x
   x = 3,089,204.41/2,708.31
6. Step 6: Final answer
   x = 1,140.64