Finding the Fourth Proportional to 1,131.32, 1,697.18 and 401.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.32 : 1,697.18 = 401.32 : x
2. Step 2: Convert to fraction form
   1,131.32/1,697.18 = 401.32/x
3. Step 3: Cross multiply
   1,131.32x = 1,697.18 × 401.32
4. Step 4: Simplify right side
   1,131.32x = 681,112.28
5. Step 5: Solve for x
   x = 681,112.28/1,131.32
6. Step 6: Final answer
   x = 602.05