Finding the Fourth Proportional to 1,785.31, 2,463.83 and 1,121.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,785.31 : 2,463.83 = 1,121.92 : x
2. Step 2: Convert to fraction form
   1,785.31/2,463.83 = 1,121.92/x
3. Step 3: Cross multiply
   1,785.31x = 2,463.83 × 1,121.92
4. Step 4: Simplify right side
   1,785.31x = 2,764,220.15
5. Step 5: Solve for x
   x = 2,764,220.15/1,785.31
6. Step 6: Final answer
   x = 1,548.31