Finding the Fourth Proportional to 1,169.98, 1,757.38 and 1,131.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,169.98 : 1,757.38 = 1,131.10 : x
2. Step 2: Convert to fraction form
   1,169.98/1,757.38 = 1,131.10/x
3. Step 3: Cross multiply
   1,169.98x = 1,757.38 × 1,131.10
4. Step 4: Simplify right side
   1,169.98x = 1,987,772.52
5. Step 5: Solve for x
   x = 1,987,772.52/1,169.98
6. Step 6: Final answer
   x = 1,698.98