Finding the Fourth Proportional to 2,101.16, 3,151.57 and 541.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.16 : 3,151.57 = 541.22 : x
2. Step 2: Convert to fraction form
   2,101.16/3,151.57 = 541.22/x
3. Step 3: Cross multiply
   2,101.16x = 3,151.57 × 541.22
4. Step 4: Simplify right side
   2,101.16x = 1,705,692.72
5. Step 5: Solve for x
   x = 1,705,692.72/2,101.16
6. Step 6: Final answer
   x = 811.79