Finding the Fourth Proportional to 2,399.89, 3,312.46 and 1,562.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,399.89 : 3,312.46 = 1,562.68 : x
2. Step 2: Convert to fraction form
   2,399.89/3,312.46 = 1,562.68/x
3. Step 3: Cross multiply
   2,399.89x = 3,312.46 × 1,562.68
4. Step 4: Simplify right side
   2,399.89x = 5,176,314.99
5. Step 5: Solve for x
   x = 5,176,314.99/2,399.89
6. Step 6: Final answer
   x = 2,156.90