Finding the Fourth Proportional to 2,100.49, 3,151.20 and 713.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.49 : 3,151.20 = 713.71 : x
2. Step 2: Convert to fraction form
   2,100.49/3,151.20 = 713.71/x
3. Step 3: Cross multiply
   2,100.49x = 3,151.20 × 713.71
4. Step 4: Simplify right side
   2,100.49x = 2,249,042.95
5. Step 5: Solve for x
   x = 2,249,042.95/2,100.49
6. Step 6: Final answer
   x = 1,070.72