Finding the Fourth Proportional to 1,072.56, 1,479.94 and 652.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,072.56 : 1,479.94 = 652.83 : x
2. Step 2: Convert to fraction form
   1,072.56/1,479.94 = 652.83/x
3. Step 3: Cross multiply
   1,072.56x = 1,479.94 × 652.83
4. Step 4: Simplify right side
   1,072.56x = 966,149.23
5. Step 5: Solve for x
   x = 966,149.23/1,072.56
6. Step 6: Final answer
   x = 900.79