Finding the Fourth Proportional to 2,100.51, 3,150.81 and 713.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.51 : 3,150.81 = 713.73 : x
2. Step 2: Convert to fraction form
   2,100.51/3,150.81 = 713.73/x
3. Step 3: Cross multiply
   2,100.51x = 3,150.81 × 713.73
4. Step 4: Simplify right side
   2,100.51x = 2,248,827.62
5. Step 5: Solve for x
   x = 2,248,827.62/2,100.51
6. Step 6: Final answer
   x = 1,070.61