Finding the Fourth Proportional to 3,393.60, 5,089.68 and 1,172.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,393.60 : 5,089.68 = 1,172.16 : x
2. Step 2: Convert to fraction form
   3,393.60/5,089.68 = 1,172.16/x
3. Step 3: Cross multiply
   3,393.60x = 5,089.68 × 1,172.16
4. Step 4: Simplify right side
   3,393.60x = 5,965,919.31
5. Step 5: Solve for x
   x = 5,965,919.31/3,393.60
6. Step 6: Final answer
   x = 1,757.99