Finding the Fourth Proportional to 1,080.72, 1,620.12 and 566.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,080.72 : 1,620.12 = 566.16 : x
2. Step 2: Convert to fraction form
   1,080.72/1,620.12 = 566.16/x
3. Step 3: Cross multiply
   1,080.72x = 1,620.12 × 566.16
4. Step 4: Simplify right side
   1,080.72x = 917,247.14
5. Step 5: Solve for x
   x = 917,247.14/1,080.72
6. Step 6: Final answer
   x = 848.74