Finding the Fourth Proportional to 2,140.82, 3,211.72 and 754.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140.82 : 3,211.72 = 754.18 : x
2. Step 2: Convert to fraction form
   2,140.82/3,211.72 = 754.18/x
3. Step 3: Cross multiply
   2,140.82x = 3,211.72 × 754.18
4. Step 4: Simplify right side
   2,140.82x = 2,422,214.99
5. Step 5: Solve for x
   x = 2,422,214.99/2,140.82
6. Step 6: Final answer
   x = 1,131.44