Finding the Fourth Proportional to 3,071.91, 4,607.89 and 763.41

Step by Step Solution

1. Step 1: Write the proportion equation
   3,071.91 : 4,607.89 = 763.41 : x
2. Step 2: Convert to fraction form
   3,071.91/4,607.89 = 763.41/x
3. Step 3: Cross multiply
   3,071.91x = 4,607.89 × 763.41
4. Step 4: Simplify right side
   3,071.91x = 3,517,699.69
5. Step 5: Solve for x
   x = 3,517,699.69/3,071.91
6. Step 6: Final answer
   x = 1,145.12