Finding the Fourth Proportional to 2,432.28, 3,356.55 and 1,438.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,432.28 : 3,356.55 = 1,438.05 : x
2. Step 2: Convert to fraction form
   2,432.28/3,356.55 = 1,438.05/x
3. Step 3: Cross multiply
   2,432.28x = 3,356.55 × 1,438.05
4. Step 4: Simplify right side
   2,432.28x = 4,826,886.73
5. Step 5: Solve for x
   x = 4,826,886.73/2,432.28
6. Step 6: Final answer
   x = 1,984.51