Finding the Fourth Proportional to 2,101.06, 3,151.52 and 867.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.06 : 3,151.52 = 867.55 : x
2. Step 2: Convert to fraction form
   2,101.06/3,151.52 = 867.55/x
3. Step 3: Cross multiply
   2,101.06x = 3,151.52 × 867.55
4. Step 4: Simplify right side
   2,101.06x = 2,734,101.18
5. Step 5: Solve for x
   x = 2,734,101.18/2,101.06
6. Step 6: Final answer
   x = 1,301.30