Finding the Fourth Proportional to 3,868.50, 5,788.17 and 2,400.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,868.50 : 5,788.17 = 2,400.78 : x
2. Step 2: Convert to fraction form
   3,868.50/5,788.17 = 2,400.78/x
3. Step 3: Cross multiply
   3,868.50x = 5,788.17 × 2,400.78
4. Step 4: Simplify right side
   3,868.50x = 13,896,122.77
5. Step 5: Solve for x
   x = 13,896,122.77/3,868.50
6. Step 6: Final answer
   x = 3,592.12