Finding the Fourth Proportional to 1,072.24, 1,477.72 and 875.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,072.24 : 1,477.72 = 875.12 : x
2. Step 2: Convert to fraction form
   1,072.24/1,477.72 = 875.12/x
3. Step 3: Cross multiply
   1,072.24x = 1,477.72 × 875.12
4. Step 4: Simplify right side
   1,072.24x = 1,293,182.33
5. Step 5: Solve for x
   x = 1,293,182.33/1,072.24
6. Step 6: Final answer
   x = 1,206.06