Finding the Fourth Proportional to 2,119.31, 2,924.96 and 1,235.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,119.31 : 2,924.96 = 1,235.60 : x
2. Step 2: Convert to fraction form
   2,119.31/2,924.96 = 1,235.60/x
3. Step 3: Cross multiply
   2,119.31x = 2,924.96 × 1,235.60
4. Step 4: Simplify right side
   2,119.31x = 3,614,094.14
5. Step 5: Solve for x
   x = 3,614,094.14/2,119.31
6. Step 6: Final answer
   x = 1,705.31