Finding the Fourth Proportional to 2,099.21, 3,151.53 and 1,612.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099.21 : 3,151.53 = 1,612.59 : x
2. Step 2: Convert to fraction form
   2,099.21/3,151.53 = 1,612.59/x
3. Step 3: Cross multiply
   2,099.21x = 3,151.53 × 1,612.59
4. Step 4: Simplify right side
   2,099.21x = 5,082,125.76
5. Step 5: Solve for x
   x = 5,082,125.76/2,099.21
6. Step 6: Final answer
   x = 2,420.98