Finding the Fourth Proportional to 1,072.91, 1,615.61 and 937.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,072.91 : 1,615.61 = 937.58 : x
2. Step 2: Convert to fraction form
   1,072.91/1,615.61 = 937.58/x
3. Step 3: Cross multiply
   1,072.91x = 1,615.61 × 937.58
4. Step 4: Simplify right side
   1,072.91x = 1,514,757.89
5. Step 5: Solve for x
   x = 1,514,757.89/1,072.91
6. Step 6: Final answer
   x = 1,411.82