Finding the Fourth Proportional to 2,630.27, 3,946.01 and 781.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,630.27 : 3,946.01 = 781.34 : x
2. Step 2: Convert to fraction form
   2,630.27/3,946.01 = 781.34/x
3. Step 3: Cross multiply
   2,630.27x = 3,946.01 × 781.34
4. Step 4: Simplify right side
   2,630.27x = 3,083,171.55
5. Step 5: Solve for x
   x = 3,083,171.55/2,630.27
6. Step 6: Final answer
   x = 1,172.19