Finding the Fourth Proportional to 1,199.12, 1,654.58 and 675.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,199.12 : 1,654.58 = 675.15 : x
2. Step 2: Convert to fraction form
   1,199.12/1,654.58 = 675.15/x
3. Step 3: Cross multiply
   1,199.12x = 1,654.58 × 675.15
4. Step 4: Simplify right side
   1,199.12x = 1,117,086.31
5. Step 5: Solve for x
   x = 1,117,086.31/1,199.12
6. Step 6: Final answer
   x = 931.59