Finding the Fourth Proportional to 2,100.33, 3,150.77 and 713.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.33 : 3,150.77 = 713.21 : x
2. Step 2: Convert to fraction form
   2,100.33/3,150.77 = 713.21/x
3. Step 3: Cross multiply
   2,100.33x = 3,150.77 × 713.21
4. Step 4: Simplify right side
   2,100.33x = 2,247,141.35
5. Step 5: Solve for x
   x = 2,247,141.35/2,100.33
6. Step 6: Final answer
   x = 1,069.90