Finding the Fourth Proportional to 2,631.96, 3,946.56 and 1,314.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,631.96 : 3,946.56 = 1,314.30 : x
2. Step 2: Convert to fraction form
   2,631.96/3,946.56 = 1,314.30/x
3. Step 3: Cross multiply
   2,631.96x = 3,946.56 × 1,314.30
4. Step 4: Simplify right side
   2,631.96x = 5,186,963.81
5. Step 5: Solve for x
   x = 5,186,963.81/2,631.96
6. Step 6: Final answer
   x = 1,970.76