Finding the Fourth Proportional to 3,816.99, 5,715.77 and 2,431.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,816.99 : 5,715.77 = 2,431.89 : x
2. Step 2: Convert to fraction form
   3,816.99/5,715.77 = 2,431.89/x
3. Step 3: Cross multiply
   3,816.99x = 5,715.77 × 2,431.89
4. Step 4: Simplify right side
   3,816.99x = 13,900,111.75
5. Step 5: Solve for x
   x = 13,900,111.75/3,816.99
6. Step 6: Final answer
   x = 3,641.64