Finding the Fourth Proportional to 1,957.83, 2,701.85 and 1,212.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,957.83 : 2,701.85 = 1,212.15 : x
2. Step 2: Convert to fraction form
   1,957.83/2,701.85 = 1,212.15/x
3. Step 3: Cross multiply
   1,957.83x = 2,701.85 × 1,212.15
4. Step 4: Simplify right side
   1,957.83x = 3,275,047.48
5. Step 5: Solve for x
   x = 3,275,047.48/1,957.83
6. Step 6: Final answer
   x = 1,672.79