Finding the Fourth Proportional to 2,101.71, 3,151.74 and 714.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.71 : 3,151.74 = 714.81 : x
2. Step 2: Convert to fraction form
   2,101.71/3,151.74 = 714.81/x
3. Step 3: Cross multiply
   2,101.71x = 3,151.74 × 714.81
4. Step 4: Simplify right side
   2,101.71x = 2,252,895.27
5. Step 5: Solve for x
   x = 2,252,895.27/2,101.71
6. Step 6: Final answer
   x = 1,071.93