Finding the Fourth Proportional to 1,648.69, 2,274.95 and 930.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,648.69 : 2,274.95 = 930.83 : x
2. Step 2: Convert to fraction form
   1,648.69/2,274.95 = 930.83/x
3. Step 3: Cross multiply
   1,648.69x = 2,274.95 × 930.83
4. Step 4: Simplify right side
   1,648.69x = 2,117,582.66
5. Step 5: Solve for x
   x = 2,117,582.66/1,648.69
6. Step 6: Final answer
   x = 1,284.41