Finding the Fourth Proportional to 1,956.12, 2,699.27 and 1,200.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,956.12 : 2,699.27 = 1,200.31 : x
2. Step 2: Convert to fraction form
   1,956.12/2,699.27 = 1,200.31/x
3. Step 3: Cross multiply
   1,956.12x = 2,699.27 × 1,200.31
4. Step 4: Simplify right side
   1,956.12x = 3,239,960.77
5. Step 5: Solve for x
   x = 3,239,960.77/1,956.12
6. Step 6: Final answer
   x = 1,656.32