Finding the Fourth Proportional to 1,118.72, 1,675.92 and 937.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,118.72 : 1,675.92 = 937.28 : x
2. Step 2: Convert to fraction form
   1,118.72/1,675.92 = 937.28/x
3. Step 3: Cross multiply
   1,118.72x = 1,675.92 × 937.28
4. Step 4: Simplify right side
   1,118.72x = 1,570,806.30
5. Step 5: Solve for x
   x = 1,570,806.30/1,118.72
6. Step 6: Final answer
   x = 1,404.11