Finding the Fourth Proportional to 2,140.82, 3,210.42 and 753.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140.82 : 3,210.42 = 753.69 : x
2. Step 2: Convert to fraction form
   2,140.82/3,210.42 = 753.69/x
3. Step 3: Cross multiply
   2,140.82x = 3,210.42 × 753.69
4. Step 4: Simplify right side
   2,140.82x = 2,419,661.45
5. Step 5: Solve for x
   x = 2,419,661.45/2,140.82
6. Step 6: Final answer
   x = 1,130.25