Finding the Fourth Proportional to 1,404.37, 1,938.02 and 766.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.37 : 1,938.02 = 766.31 : x
2. Step 2: Convert to fraction form
   1,404.37/1,938.02 = 766.31/x
3. Step 3: Cross multiply
   1,404.37x = 1,938.02 × 766.31
4. Step 4: Simplify right side
   1,404.37x = 1,485,124.11
5. Step 5: Solve for x
   x = 1,485,124.11/1,404.37
6. Step 6: Final answer
   x = 1,057.50