Finding the Fourth Proportional to 2,100.75, 3,148.37 and 867.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.75 : 3,148.37 = 867.48 : x
2. Step 2: Convert to fraction form
   2,100.75/3,148.37 = 867.48/x
3. Step 3: Cross multiply
   2,100.75x = 3,148.37 × 867.48
4. Step 4: Simplify right side
   2,100.75x = 2,731,148.01
5. Step 5: Solve for x
   x = 2,731,148.01/2,100.75
6. Step 6: Final answer
   x = 1,300.08