Finding the Fourth Proportional to 2,120.37, 2,924.55 and 1,236.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,120.37 : 2,924.55 = 1,236.12 : x
2. Step 2: Convert to fraction form
   2,120.37/2,924.55 = 1,236.12/x
3. Step 3: Cross multiply
   2,120.37x = 2,924.55 × 1,236.12
4. Step 4: Simplify right side
   2,120.37x = 3,615,094.75
5. Step 5: Solve for x
   x = 3,615,094.75/2,120.37
6. Step 6: Final answer
   x = 1,704.94