Finding the Fourth Proportional to 1,262.69, 1,731.38 and 1,137.85

Step by Step Solution

1. Step 1: Write the proportion equation
   1,262.69 : 1,731.38 = 1,137.85 : x
2. Step 2: Convert to fraction form
   1,262.69/1,731.38 = 1,137.85/x
3. Step 3: Cross multiply
   1,262.69x = 1,731.38 × 1,137.85
4. Step 4: Simplify right side
   1,262.69x = 1,970,040.72
5. Step 5: Solve for x
   x = 1,970,040.72/1,262.69
6. Step 6: Final answer
   x = 1,560.20