Finding the Fourth Proportional to 1,785.46, 2,463.82 and 1,039.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,785.46 : 2,463.82 = 1,039.30 : x
2. Step 2: Convert to fraction form
   1,785.46/2,463.82 = 1,039.30/x
3. Step 3: Cross multiply
   1,785.46x = 2,463.82 × 1,039.30
4. Step 4: Simplify right side
   1,785.46x = 2,560,630.61
5. Step 5: Solve for x
   x = 2,560,630.61/1,785.46
6. Step 6: Final answer
   x = 1,434.16