Finding the Fourth Proportional to 1,131.42, 1,697.31 and 401.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.42 : 1,697.31 = 401.01 : x
2. Step 2: Convert to fraction form
   1,131.42/1,697.31 = 401.01/x
3. Step 3: Cross multiply
   1,131.42x = 1,697.31 × 401.01
4. Step 4: Simplify right side
   1,131.42x = 680,638.28
5. Step 5: Solve for x
   x = 680,638.28/1,131.42
6. Step 6: Final answer
   x = 601.58