Finding the Fourth Proportional to 3,111.39, 4,293.50 and 1,785.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,111.39 : 4,293.50 = 1,785.06 : x
2. Step 2: Convert to fraction form
   3,111.39/4,293.50 = 1,785.06/x
3. Step 3: Cross multiply
   3,111.39x = 4,293.50 × 1,785.06
4. Step 4: Simplify right side
   3,111.39x = 7,664,146.18
5. Step 5: Solve for x
   x = 7,664,146.18/3,111.39
6. Step 6: Final answer
   x = 2,463.25