Finding the Fourth Proportional to 1,742.94, 2,403.46 and 1,212.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,742.94 : 2,403.46 = 1,212.42 : x
2. Step 2: Convert to fraction form
   1,742.94/2,403.46 = 1,212.42/x
3. Step 3: Cross multiply
   1,742.94x = 2,403.46 × 1,212.42
4. Step 4: Simplify right side
   1,742.94x = 2,914,002.97
5. Step 5: Solve for x
   x = 2,914,002.97/1,742.94
6. Step 6: Final answer
   x = 1,671.89