Finding the Fourth Proportional to 1,959.02, 2,939.20 and 1,227.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,959.02 : 2,939.20 = 1,227.72 : x
2. Step 2: Convert to fraction form
   1,959.02/2,939.20 = 1,227.72/x
3. Step 3: Cross multiply
   1,959.02x = 2,939.20 × 1,227.72
4. Step 4: Simplify right side
   1,959.02x = 3,608,514.62
5. Step 5: Solve for x
   x = 3,608,514.62/1,959.02
6. Step 6: Final answer
   x = 1,842.00