Finding the Fourth Proportional to 1,287.02, 1,776.94 and 937.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,287.02 : 1,776.94 = 937.10 : x
2. Step 2: Convert to fraction form
   1,287.02/1,776.94 = 937.10/x
3. Step 3: Cross multiply
   1,287.02x = 1,776.94 × 937.10
4. Step 4: Simplify right side
   1,287.02x = 1,665,170.47
5. Step 5: Solve for x
   x = 1,665,170.47/1,287.02
6. Step 6: Final answer
   x = 1,293.82