Finding the Fourth Proportional to 1,445.40, 2,152.71 and 1,394.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.40 : 2,152.71 = 1,394.37 : x
2. Step 2: Convert to fraction form
   1,445.40/2,152.71 = 1,394.37/x
3. Step 3: Cross multiply
   1,445.40x = 2,152.71 × 1,394.37
4. Step 4: Simplify right side
   1,445.40x = 3,001,674.24
5. Step 5: Solve for x
   x = 3,001,674.24/1,445.40
6. Step 6: Final answer
   x = 2,076.71