Finding the Fourth Proportional to 2,171.37, 3,256.37 and 784.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,171.37 : 3,256.37 = 784.51 : x
2. Step 2: Convert to fraction form
   2,171.37/3,256.37 = 784.51/x
3. Step 3: Cross multiply
   2,171.37x = 3,256.37 × 784.51
4. Step 4: Simplify right side
   2,171.37x = 2,554,650.91
5. Step 5: Solve for x
   x = 2,554,650.91/2,171.37
6. Step 6: Final answer
   x = 1,176.52