Finding the Fourth Proportional to 2,139.67, 2,948.71 and 1,713.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139.67 : 2,948.71 = 1,713.81 : x
2. Step 2: Convert to fraction form
   2,139.67/2,948.71 = 1,713.81/x
3. Step 3: Cross multiply
   2,139.67x = 2,948.71 × 1,713.81
4. Step 4: Simplify right side
   2,139.67x = 5,053,528.69
5. Step 5: Solve for x
   x = 5,053,528.69/2,139.67
6. Step 6: Final answer
   x = 2,361.83