Finding the Fourth Proportional to 1,964.86, 2,710.60 and 1,256.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,964.86 : 2,710.60 = 1,256.35 : x
2. Step 2: Convert to fraction form
   1,964.86/2,710.60 = 1,256.35/x
3. Step 3: Cross multiply
   1,964.86x = 2,710.60 × 1,256.35
4. Step 4: Simplify right side
   1,964.86x = 3,405,462.31
5. Step 5: Solve for x
   x = 3,405,462.31/1,964.86
6. Step 6: Final answer
   x = 1,733.18