Finding the Fourth Proportional to 1,131.56, 1,697.06 and 309.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.56 : 1,697.06 = 309.83 : x
2. Step 2: Convert to fraction form
   1,131.56/1,697.06 = 309.83/x
3. Step 3: Cross multiply
   1,131.56x = 1,697.06 × 309.83
4. Step 4: Simplify right side
   1,131.56x = 525,802.79
5. Step 5: Solve for x
   x = 525,802.79/1,131.56
6. Step 6: Final answer
   x = 464.67