Finding the Fourth Proportional to 3,387.32, 5,080.87 and 922.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,387.32 : 5,080.87 = 922.06 : x
2. Step 2: Convert to fraction form
   3,387.32/5,080.87 = 922.06/x
3. Step 3: Cross multiply
   3,387.32x = 5,080.87 × 922.06
4. Step 4: Simplify right side
   3,387.32x = 4,684,843.89
5. Step 5: Solve for x
   x = 4,684,843.89/3,387.32
6. Step 6: Final answer
   x = 1,383.06