Finding the Fourth Proportional to 3,123.80, 4,310.78 and 1,726.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,123.80 : 4,310.78 = 1,726.52 : x
2. Step 2: Convert to fraction form
   3,123.80/4,310.78 = 1,726.52/x
3. Step 3: Cross multiply
   3,123.80x = 4,310.78 × 1,726.52
4. Step 4: Simplify right side
   3,123.80x = 7,442,647.89
5. Step 5: Solve for x
   x = 7,442,647.89/3,123.80
6. Step 6: Final answer
   x = 2,382.56