Finding the Fourth Proportional to 1,131.83, 1,698.27 and 401.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.83 : 1,698.27 = 401.75 : x
2. Step 2: Convert to fraction form
   1,131.83/1,698.27 = 401.75/x
3. Step 3: Cross multiply
   1,131.83x = 1,698.27 × 401.75
4. Step 4: Simplify right side
   1,131.83x = 682,271.48
5. Step 5: Solve for x
   x = 682,271.48/1,131.83
6. Step 6: Final answer
   x = 602.81