Finding the Fourth Proportional to 1,072.91, 1,480.55 and 607.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,072.91 : 1,480.55 = 607.13 : x
2. Step 2: Convert to fraction form
   1,072.91/1,480.55 = 607.13/x
3. Step 3: Cross multiply
   1,072.91x = 1,480.55 × 607.13
4. Step 4: Simplify right side
   1,072.91x = 898,886.32
5. Step 5: Solve for x
   x = 898,886.32/1,072.91
6. Step 6: Final answer
   x = 837.80