Finding the Fourth Proportional to 2,245.73, 3,100.64 and 1,406.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,245.73 : 3,100.64 = 1,406.78 : x
2. Step 2: Convert to fraction form
   2,245.73/3,100.64 = 1,406.78/x
3. Step 3: Cross multiply
   2,245.73x = 3,100.64 × 1,406.78
4. Step 4: Simplify right side
   2,245.73x = 4,361,918.34
5. Step 5: Solve for x
   x = 4,361,918.34/2,245.73
6. Step 6: Final answer
   x = 1,942.32