Finding the Fourth Proportional to 3,860.74, 5,326.59 and 2,288.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,860.74 : 5,326.59 = 2,288.53 : x
2. Step 2: Convert to fraction form
   3,860.74/5,326.59 = 2,288.53/x
3. Step 3: Cross multiply
   3,860.74x = 5,326.59 × 2,288.53
4. Step 4: Simplify right side
   3,860.74x = 12,190,061.01
5. Step 5: Solve for x
   x = 12,190,061.01/3,860.74
6. Step 6: Final answer
   x = 3,157.44