Finding the Fourth Proportional to 2,533.60, 3,801.96 and 1,438.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,533.60 : 3,801.96 = 1,438.72 : x
2. Step 2: Convert to fraction form
   2,533.60/3,801.96 = 1,438.72/x
3. Step 3: Cross multiply
   2,533.60x = 3,801.96 × 1,438.72
4. Step 4: Simplify right side
   2,533.60x = 5,469,955.89
5. Step 5: Solve for x
   x = 5,469,955.89/2,533.60
6. Step 6: Final answer
   x = 2,158.97