Finding the Fourth Proportional to 1,131.32, 1,700.42 and 1,107.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.32 : 1,700.42 = 1,107.09 : x
2. Step 2: Convert to fraction form
   1,131.32/1,700.42 = 1,107.09/x
3. Step 3: Cross multiply
   1,131.32x = 1,700.42 × 1,107.09
4. Step 4: Simplify right side
   1,131.32x = 1,882,512.44
5. Step 5: Solve for x
   x = 1,882,512.44/1,131.32
6. Step 6: Final answer
   x = 1,664.00