Finding the Fourth Proportional to 1,804.50, 2,706.72 and 830.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,804.50 : 2,706.72 = 830.46 : x
2. Step 2: Convert to fraction form
   1,804.50/2,706.72 = 830.46/x
3. Step 3: Cross multiply
   1,804.50x = 2,706.72 × 830.46
4. Step 4: Simplify right side
   1,804.50x = 2,247,822.69
5. Step 5: Solve for x
   x = 2,247,822.69/1,804.50
6. Step 6: Final answer
   x = 1,245.68