Finding the Fourth Proportional to 2,080.02, 3,120.56 and 619.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.02 : 3,120.56 = 619.18 : x
2. Step 2: Convert to fraction form
   2,080.02/3,120.56 = 619.18/x
3. Step 3: Cross multiply
   2,080.02x = 3,120.56 × 619.18
4. Step 4: Simplify right side
   2,080.02x = 1,932,179.77
5. Step 5: Solve for x
   x = 1,932,179.77/2,080.02
6. Step 6: Final answer
   x = 928.92