Finding the Fourth Proportional to 1,101.31, 1,644.13 and 937.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.31 : 1,644.13 = 937.33 : x
2. Step 2: Convert to fraction form
   1,101.31/1,644.13 = 937.33/x
3. Step 3: Cross multiply
   1,101.31x = 1,644.13 × 937.33
4. Step 4: Simplify right side
   1,101.31x = 1,541,094.72
5. Step 5: Solve for x
   x = 1,541,094.72/1,101.31
6. Step 6: Final answer
   x = 1,399.33