Finding the Fourth Proportional to 1,131.56, 1,696.72 and 351.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.56 : 1,696.72 = 351.34 : x
2. Step 2: Convert to fraction form
   1,131.56/1,696.72 = 351.34/x
3. Step 3: Cross multiply
   1,131.56x = 1,696.72 × 351.34
4. Step 4: Simplify right side
   1,131.56x = 596,125.60
5. Step 5: Solve for x
   x = 596,125.60/1,131.56
6. Step 6: Final answer
   x = 526.82