Finding the Fourth Proportional to 1,673.61, 2,309.61 and 927.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,673.61 : 2,309.61 = 927.59 : x
2. Step 2: Convert to fraction form
   1,673.61/2,309.61 = 927.59/x
3. Step 3: Cross multiply
   1,673.61x = 2,309.61 × 927.59
4. Step 4: Simplify right side
   1,673.61x = 2,142,359.59
5. Step 5: Solve for x
   x = 2,142,359.59/1,673.61
6. Step 6: Final answer
   x = 1,280.08