Finding the Fourth Proportional to 1,500.72, 2,231.04 and 1,397.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,500.72 : 2,231.04 = 1,397.04 : x
2. Step 2: Convert to fraction form
   1,500.72/2,231.04 = 1,397.04/x
3. Step 3: Cross multiply
   1,500.72x = 2,231.04 × 1,397.04
4. Step 4: Simplify right side
   1,500.72x = 3,116,852.12
5. Step 5: Solve for x
   x = 3,116,852.12/1,500.72
6. Step 6: Final answer
   x = 2,076.90