Finding the Fourth Proportional to 1,072.89, 1,480.56 and 607.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,072.89 : 1,480.56 = 607.14 : x
2. Step 2: Convert to fraction form
   1,072.89/1,480.56 = 607.14/x
3. Step 3: Cross multiply
   1,072.89x = 1,480.56 × 607.14
4. Step 4: Simplify right side
   1,072.89x = 898,907.20
5. Step 5: Solve for x
   x = 898,907.20/1,072.89
6. Step 6: Final answer
   x = 837.84