Finding the Fourth Proportional to 1,500.72, 2,072.22 and 1,111.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,500.72 : 2,072.22 = 1,111.92 : x
2. Step 2: Convert to fraction form
   1,500.72/2,072.22 = 1,111.92/x
3. Step 3: Cross multiply
   1,500.72x = 2,072.22 × 1,111.92
4. Step 4: Simplify right side
   1,500.72x = 2,304,142.86
5. Step 5: Solve for x
   x = 2,304,142.86/1,500.72
6. Step 6: Final answer
   x = 1,535.36