Finding the Fourth Proportional to 2,142.44, 2,956.56 and 1,210.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.44 : 2,956.56 = 1,210.94 : x
2. Step 2: Convert to fraction form
   2,142.44/2,956.56 = 1,210.94/x
3. Step 3: Cross multiply
   2,142.44x = 2,956.56 × 1,210.94
4. Step 4: Simplify right side
   2,142.44x = 3,580,216.77
5. Step 5: Solve for x
   x = 3,580,216.77/2,142.44
6. Step 6: Final answer
   x = 1,671.09