Finding the Fourth Proportional to 1,076.09, 1,485.13 and 704.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076.09 : 1,485.13 = 704.15 : x
2. Step 2: Convert to fraction form
   1,076.09/1,485.13 = 704.15/x
3. Step 3: Cross multiply
   1,076.09x = 1,485.13 × 704.15
4. Step 4: Simplify right side
   1,076.09x = 1,045,754.29
5. Step 5: Solve for x
   x = 1,045,754.29/1,076.09
6. Step 6: Final answer
   x = 971.81