Finding the Fourth Proportional to 2,101.34, 3,151.71 and 714.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.34 : 3,151.71 = 714.72 : x
2. Step 2: Convert to fraction form
   2,101.34/3,151.71 = 714.72/x
3. Step 3: Cross multiply
   2,101.34x = 3,151.71 × 714.72
4. Step 4: Simplify right side
   2,101.34x = 2,252,590.17
5. Step 5: Solve for x
   x = 2,252,590.17/2,101.34
6. Step 6: Final answer
   x = 1,071.98