Finding the Fourth Proportional to 1,284.89, 1,773.17 and 754.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,284.89 : 1,773.17 = 754.15 : x
2. Step 2: Convert to fraction form
   1,284.89/1,773.17 = 754.15/x
3. Step 3: Cross multiply
   1,284.89x = 1,773.17 × 754.15
4. Step 4: Simplify right side
   1,284.89x = 1,337,227.95
5. Step 5: Solve for x
   x = 1,337,227.95/1,284.89
6. Step 6: Final answer
   x = 1,040.74