Finding the Fourth Proportional to 2,099.77, 3,150.20 and 1,809.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099.77 : 3,150.20 = 1,809.93 : x
2. Step 2: Convert to fraction form
   2,099.77/3,150.20 = 1,809.93/x
3. Step 3: Cross multiply
   2,099.77x = 3,150.20 × 1,809.93
4. Step 4: Simplify right side
   2,099.77x = 5,701,641.49
5. Step 5: Solve for x
   x = 5,701,641.49/2,099.77
6. Step 6: Final answer
   x = 2,715.36