Finding the Fourth Proportional to 1,284.52, 1,771.63 and 930.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,284.52 : 1,771.63 = 930.49 : x
2. Step 2: Convert to fraction form
   1,284.52/1,771.63 = 930.49/x
3. Step 3: Cross multiply
   1,284.52x = 1,771.63 × 930.49
4. Step 4: Simplify right side
   1,284.52x = 1,648,483.89
5. Step 5: Solve for x
   x = 1,648,483.89/1,284.52
6. Step 6: Final answer
   x = 1,283.35