Finding the Fourth Proportional to 2,142.80, 3,210.53 and 1,169.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.80 : 3,210.53 = 1,169.58 : x
2. Step 2: Convert to fraction form
   2,142.80/3,210.53 = 1,169.58/x
3. Step 3: Cross multiply
   2,142.80x = 3,210.53 × 1,169.58
4. Step 4: Simplify right side
   2,142.80x = 3,754,965.83
5. Step 5: Solve for x
   x = 3,754,965.83/2,142.80
6. Step 6: Final answer
   x = 1,752.37