Finding the Fourth Proportional to 2,501.78, 3,452.31 and 1,438.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,501.78 : 3,452.31 = 1,438.83 : x
2. Step 2: Convert to fraction form
   2,501.78/3,452.31 = 1,438.83/x
3. Step 3: Cross multiply
   2,501.78x = 3,452.31 × 1,438.83
4. Step 4: Simplify right side
   2,501.78x = 4,967,287.20
5. Step 5: Solve for x
   x = 4,967,287.20/2,501.78
6. Step 6: Final answer
   x = 1,985.51