Finding the Fourth Proportional to 1,131.23, 1,696.76 and 400.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.23 : 1,696.76 = 400.79 : x
2. Step 2: Convert to fraction form
   1,131.23/1,696.76 = 400.79/x
3. Step 3: Cross multiply
   1,131.23x = 1,696.76 × 400.79
4. Step 4: Simplify right side
   1,131.23x = 680,040.89
5. Step 5: Solve for x
   x = 680,040.89/1,131.23
6. Step 6: Final answer
   x = 601.15