Finding the Fourth Proportional to 1,404.37, 1,938.03 and 815.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.37 : 1,938.03 = 815.25 : x
2. Step 2: Convert to fraction form
   1,404.37/1,938.03 = 815.25/x
3. Step 3: Cross multiply
   1,404.37x = 1,938.03 × 815.25
4. Step 4: Simplify right side
   1,404.37x = 1,579,978.96
5. Step 5: Solve for x
   x = 1,579,978.96/1,404.37
6. Step 6: Final answer
   x = 1,125.04