Finding the Fourth Proportional to 1,961.31, 2,940.42 and 1,343.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,961.31 : 2,940.42 = 1,343.13 : x
2. Step 2: Convert to fraction form
   1,961.31/2,940.42 = 1,343.13/x
3. Step 3: Cross multiply
   1,961.31x = 2,940.42 × 1,343.13
4. Step 4: Simplify right side
   1,961.31x = 3,949,366.31
5. Step 5: Solve for x
   x = 3,949,366.31/1,961.31
6. Step 6: Final answer
   x = 2,013.64