Finding the Fourth Proportional to 3,123.34, 4,309.32 and 1,778.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,123.34 : 4,309.32 = 1,778.98 : x
2. Step 2: Convert to fraction form
   3,123.34/4,309.32 = 1,778.98/x
3. Step 3: Cross multiply
   3,123.34x = 4,309.32 × 1,778.98
4. Step 4: Simplify right side
   3,123.34x = 7,666,194.09
5. Step 5: Solve for x
   x = 7,666,194.09/3,123.34
6. Step 6: Final answer
   x = 2,454.49