Finding the Fourth Proportional to 1,072.72, 1,607.10 and 746.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,072.72 : 1,607.10 = 746.92 : x
2. Step 2: Convert to fraction form
   1,072.72/1,607.10 = 746.92/x
3. Step 3: Cross multiply
   1,072.72x = 1,607.10 × 746.92
4. Step 4: Simplify right side
   1,072.72x = 1,200,375.13
5. Step 5: Solve for x
   x = 1,200,375.13/1,072.72
6. Step 6: Final answer
   x = 1,119.00