Finding the Fourth Proportional to 1,732.72, 2,389.35 and 1,142.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,732.72 : 2,389.35 = 1,142.50 : x
2. Step 2: Convert to fraction form
   1,732.72/2,389.35 = 1,142.50/x
3. Step 3: Cross multiply
   1,732.72x = 2,389.35 × 1,142.50
4. Step 4: Simplify right side
   1,732.72x = 2,729,832.38
5. Step 5: Solve for x
   x = 2,729,832.38/1,732.72
6. Step 6: Final answer
   x = 1,575.46