Finding the Fourth Proportional to 2,500.88, 3,450.80 and 1,438.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,500.88 : 3,450.80 = 1,438.63 : x
2. Step 2: Convert to fraction form
   2,500.88/3,450.80 = 1,438.63/x
3. Step 3: Cross multiply
   2,500.88x = 3,450.80 × 1,438.63
4. Step 4: Simplify right side
   2,500.88x = 4,964,419.37
5. Step 5: Solve for x
   x = 4,964,419.37/2,500.88
6. Step 6: Final answer
   x = 1,985.07