Finding the Fourth Proportional to 1,036.67, 1,554.42 and 343.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,036.67 : 1,554.42 = 343.15 : x
2. Step 2: Convert to fraction form
   1,036.67/1,554.42 = 343.15/x
3. Step 3: Cross multiply
   1,036.67x = 1,554.42 × 343.15
4. Step 4: Simplify right side
   1,036.67x = 533,399.22
5. Step 5: Solve for x
   x = 533,399.22/1,036.67
6. Step 6: Final answer
   x = 514.53