Finding the Fourth Proportional to 1,072.76, 1,480.39 and 607.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,072.76 : 1,480.39 = 607.01 : x
2. Step 2: Convert to fraction form
   1,072.76/1,480.39 = 607.01/x
3. Step 3: Cross multiply
   1,072.76x = 1,480.39 × 607.01
4. Step 4: Simplify right side
   1,072.76x = 898,608.50
5. Step 5: Solve for x
   x = 898,608.50/1,072.76
6. Step 6: Final answer
   x = 837.66