Finding the Fourth Proportional to 1,131.69, 1,697.53 and 554.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.69 : 1,697.53 = 554.16 : x
2. Step 2: Convert to fraction form
   1,131.69/1,697.53 = 554.16/x
3. Step 3: Cross multiply
   1,131.69x = 1,697.53 × 554.16
4. Step 4: Simplify right side
   1,131.69x = 940,703.22
5. Step 5: Solve for x
   x = 940,703.22/1,131.69
6. Step 6: Final answer
   x = 831.24