Finding the Fourth Proportional to 1,131.86, 1,699.74 and 672.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.86 : 1,699.74 = 672.52 : x
2. Step 2: Convert to fraction form
   1,131.86/1,699.74 = 672.52/x
3. Step 3: Cross multiply
   1,131.86x = 1,699.74 × 672.52
4. Step 4: Simplify right side
   1,131.86x = 1,143,109.14
5. Step 5: Solve for x
   x = 1,143,109.14/1,131.86
6. Step 6: Final answer
   x = 1,009.94