Finding the Fourth Proportional to 2,580.03, 3,870.51 and 938.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580.03 : 3,870.51 = 938.88 : x
2. Step 2: Convert to fraction form
   2,580.03/3,870.51 = 938.88/x
3. Step 3: Cross multiply
   2,580.03x = 3,870.51 × 938.88
4. Step 4: Simplify right side
   2,580.03x = 3,633,944.43
5. Step 5: Solve for x
   x = 3,633,944.43/2,580.03
6. Step 6: Final answer
   x = 1,408.49