Finding the Fourth Proportional to 2,142.55, 3,210.15 and 1,169.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.55 : 3,210.15 = 1,169.33 : x
2. Step 2: Convert to fraction form
   2,142.55/3,210.15 = 1,169.33/x
3. Step 3: Cross multiply
   2,142.55x = 3,210.15 × 1,169.33
4. Step 4: Simplify right side
   2,142.55x = 3,753,724.70
5. Step 5: Solve for x
   x = 3,753,724.70/2,142.55
6. Step 6: Final answer
   x = 1,751.99