Finding the Fourth Proportional to 1,479.94, 2,042.18 and 816.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,479.94 : 2,042.18 = 816.72 : x
2. Step 2: Convert to fraction form
   1,479.94/2,042.18 = 816.72/x
3. Step 3: Cross multiply
   1,479.94x = 2,042.18 × 816.72
4. Step 4: Simplify right side
   1,479.94x = 1,667,889.25
5. Step 5: Solve for x
   x = 1,667,889.25/1,479.94
6. Step 6: Final answer
   x = 1,127.00